diff --git a/.gradle/4.4/fileHashes/fileHashes.bin b/.gradle/4.4/fileHashes/fileHashes.bin
index 69df71d..a0e8d64 100644
Binary files a/.gradle/4.4/fileHashes/fileHashes.bin and b/.gradle/4.4/fileHashes/fileHashes.bin differ
diff --git a/.gradle/4.4/fileHashes/fileHashes.lock b/.gradle/4.4/fileHashes/fileHashes.lock
index 27a02ab..67087ea 100644
Binary files a/.gradle/4.4/fileHashes/fileHashes.lock and b/.gradle/4.4/fileHashes/fileHashes.lock differ
diff --git a/.idea/modules/SeniorAssistant_main.iml b/.idea/modules/SeniorAssistant_main.iml
index 01deee6..1b6e4e6 100644
--- a/.idea/modules/SeniorAssistant_main.iml
+++ b/.idea/modules/SeniorAssistant_main.iml
@@ -9,10 +9,40 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/../../lib/zway-lib-0.2.9-SNAPSHOT.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
     <orderEntry type="library" name="Gradle: com.google.code.gson:gson:2.8.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.api-client:google-api-client:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.http-client:google-http-client-jackson2:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client-jetty:1.11.0-beta" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client-java6:1.11.0-beta" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.http-client:google-http-client:1.23.0" level="project" />
     <orderEntry type="library" name="Gradle: org.apache.httpcomponents:httpclient:4.5.3" level="project" />
+    <orderEntry type="library" name="Gradle: org.apache.commons:commons-lang3:3.4" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-client:9.3.11.v20160721" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-http:9.3.11.v20160721" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-client:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-common:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-io:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-util:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-api:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.slf4j:slf4j-api:1.7.21" level="project" />
     <orderEntry type="library" name="Gradle: org.apache.httpcomponents:httpcore:4.4.6" level="project" />
     <orderEntry type="library" name="Gradle: commons-logging:commons-logging:1.2" level="project" />
     <orderEntry type="library" name="Gradle: commons-codec:commons-codec:1.9" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.guava:guava-jdk5:17.0" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:jetty:6.1.26" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.code.findbugs:jsr305:1.3.9" level="project" />
+    <orderEntry type="library" name="Gradle: com.fasterxml.jackson.core:jackson-core:2.1.3" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:jetty-util:6.1.26" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:servlet-api:2.5-20081211" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/.idea/modules/SeniorAssistant_test.iml b/.idea/modules/SeniorAssistant_test.iml
index 508d79f..75dbc70 100644
--- a/.idea/modules/SeniorAssistant_test.iml
+++ b/.idea/modules/SeniorAssistant_test.iml
@@ -10,13 +10,43 @@
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="module" module-name="SeniorAssistant_main" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/../../lib/zway-lib-0.2.9-SNAPSHOT.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
     <orderEntry type="library" name="Gradle: com.google.code.gson:gson:2.8.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.api-client:google-api-client:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.http-client:google-http-client-jackson2:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client-jetty:1.11.0-beta" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client-java6:1.11.0-beta" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.oauth-client:google-oauth-client:1.23.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.http-client:google-http-client:1.23.0" level="project" />
     <orderEntry type="library" name="Gradle: org.apache.httpcomponents:httpclient:4.5.3" level="project" />
+    <orderEntry type="library" name="Gradle: org.apache.commons:commons-lang3:3.4" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-client:9.3.11.v20160721" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-http:9.3.11.v20160721" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-client:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-common:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-io:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty:jetty-util:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.eclipse.jetty.websocket:websocket-api:9.3.12.v20160915" level="project" />
+    <orderEntry type="library" name="Gradle: org.slf4j:slf4j-api:1.7.21" level="project" />
     <orderEntry type="library" name="Gradle: junit:junit:4.12" level="project" />
     <orderEntry type="library" name="Gradle: org.apache.httpcomponents:httpcore:4.4.6" level="project" />
     <orderEntry type="library" name="Gradle: commons-logging:commons-logging:1.2" level="project" />
     <orderEntry type="library" name="Gradle: commons-codec:commons-codec:1.9" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.guava:guava-jdk5:17.0" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:jetty:6.1.26" level="project" />
     <orderEntry type="library" name="Gradle: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.code.findbugs:jsr305:1.3.9" level="project" />
+    <orderEntry type="library" name="Gradle: com.fasterxml.jackson.core:jackson-core:2.1.3" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:jetty-util:6.1.26" level="project" />
+    <orderEntry type="library" name="Gradle: org.mortbay.jetty:servlet-api:2.5-20081211" level="project" />
   </component>
   <component name="TestModuleProperties" production-module="SeniorAssistant_main" />
 </module>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 9e9c42c..9aa30cf 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,15 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="bf16df42-e8f6-4a52-a6da-5bff747a1a87" name="Default" comment="">
+      <change afterPath="$PROJECT_DIR$/src/main/java/device/Sensor.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/device/ZWaySimpleCallback.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/TestSensor.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.gradle/4.4/fileHashes/fileHashes.bin" beforeDir="false" afterPath="$PROJECT_DIR$/.gradle/4.4/fileHashes/fileHashes.bin" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.gradle/4.4/fileHashes/fileHashes.lock" beforeDir="false" afterPath="$PROJECT_DIR$/.gradle/4.4/fileHashes/fileHashes.lock" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/modules/SeniorAssistant_main.iml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/modules/SeniorAssistant_main.iml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/modules/SeniorAssistant_test.iml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/modules/SeniorAssistant_test.iml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/build.gradle" beforeDir="false" afterPath="$PROJECT_DIR$/build.gradle" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/.gradle/" />
     <ignored path="$PROJECT_DIR$/build/" />
@@ -21,11 +29,20 @@
   </component>
   <component name="FileEditorManager">
     <leaf>
-      <file leaf-file-name="TestLights.java" pinned="false" current-in-tab="true">
+      <file leaf-file-name="Sensor.java" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/main/java/device/Sensor.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="51">
+              <caret line="3" column="14" selection-start-line="3" selection-start-column="14" selection-end-line="3" selection-end-column="14" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="TestLights.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/test/java/TestLights.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="221">
-              <caret line="13" column="43" selection-start-line="13" selection-start-column="43" selection-end-line="13" selection-end-column="43" />
+            <state relative-caret-position="51">
+              <caret line="9" column="76" lean-forward="true" selection-start-line="8" selection-start-column="4" selection-end-line="9" selection-end-column="76" />
               <folding>
                 <element signature="imports" expanded="true" />
               </folding>
@@ -33,17 +50,47 @@
           </provider>
         </entry>
       </file>
+      <file leaf-file-name="TestSensor.java" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/src/test/java/TestSensor.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="306">
+              <caret line="19" column="33" selection-start-line="19" selection-start-column="33" selection-end-line="19" selection-end-column="33" />
+              <folding>
+                <element signature="imports" expanded="true" />
+                <element signature="e#161#162#0" expanded="true" />
+                <element signature="e#217#218#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
       <file leaf-file-name="Hue.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/device/Hue.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="301">
-              <caret line="59" column="56" lean-forward="true" selection-start-line="59" selection-start-column="56" selection-end-line="59" selection-end-column="56" />
+            <state relative-caret-position="884">
+              <caret line="59" column="56" selection-start-line="59" selection-start-column="56" selection-end-line="59" selection-end-column="56" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="build.gradle" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/build.gradle">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="238">
+              <caret line="34" column="29" selection-start-line="34" selection-start-column="29" selection-end-line="34" selection-end-column="35" />
             </state>
           </provider>
         </entry>
       </file>
     </leaf>
   </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
+      </list>
+    </option>
+  </component>
   <component name="FindInProjectRecents">
     <findStrings>
       <find>nameLights</find>
@@ -64,7 +111,7 @@
   <component name="GradleLocalSettings">
     <option name="myGradleHomes">
       <map>
-        <entry key="$PROJECT_DIR$" value="C:\Users\Dawit\.gradle\wrapper\dists\gradle-4.4-all\9br9xq1tocpiv8o6njlyu5op1\gradle-4.4" />
+        <entry key="$PROJECT_DIR$" value="C:\Users\f19st\.gradle\wrapper\dists\gradle-4.4-all\9br9xq1tocpiv8o6njlyu5op1\gradle-4.4" />
       </map>
     </option>
     <option name="myGradleVersions">
@@ -239,9 +286,9 @@
     </option>
     <option name="modificationStamps">
       <map>
-        <entry key="$PROJECT_DIR$" value="6111089685131" />
+        <entry key="$PROJECT_DIR$" value="6111164529373" />
         <entry key="$PROJECT_DIR$/.gradle" value="0" />
-        <entry key="$PROJECT_DIR$/build.gradle" value="2680631353" />
+        <entry key="$PROJECT_DIR$/build.gradle" value="950490900" />
         <entry key="$PROJECT_DIR$/gradle/wrapper/gradle-wrapper.properties" value="2083459160" />
         <entry key="$PROJECT_DIR$/settings.gradle" value="2435099665" />
       </map>
@@ -430,6 +477,10 @@
       <list>
         <option value="$PROJECT_DIR$/src/test/java/TestLights.java" />
         <option value="$PROJECT_DIR$/src/main/java/device/Hue.java" />
+        <option value="$PROJECT_DIR$/build.gradle" />
+        <option value="$PROJECT_DIR$/src/main/java/device/ZWaySimpleCallback.java" />
+        <option value="$PROJECT_DIR$/src/main/java/device/Sensor.java" />
+        <option value="$PROJECT_DIR$/src/test/java/TestSensor.java" />
       </list>
     </option>
   </component>
@@ -443,9 +494,10 @@
     <packageJsonPaths />
   </component>
   <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="-9" />
-    <option name="width" value="980" />
-    <option name="height" value="1040" />
+    <option name="x" value="-149" />
+    <option name="y" value="336" />
+    <option name="width" value="1346" />
+    <option name="height" value="688" />
   </component>
   <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
   <component name="ProjectView">
@@ -453,7 +505,6 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="AndroidView" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -466,35 +517,6 @@
               <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
               <item name="src" type="462c0819:PsiDirectoryNode" />
             </path>
-            <path>
-              <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
-              <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="src" type="462c0819:PsiDirectoryNode" />
-              <item name="main" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-            </path>
-            <path>
-              <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
-              <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="src" type="462c0819:PsiDirectoryNode" />
-              <item name="main" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="java" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
-              <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="src" type="462c0819:PsiDirectoryNode" />
-              <item name="main" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="java" type="462c0819:PsiDirectoryNode" />
-              <item name="device" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
-              <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="src" type="462c0819:PsiDirectoryNode" />
-              <item name="main" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
-              <item name="java" type="462c0819:PsiDirectoryNode" />
-              <item name="manage" type="462c0819:PsiDirectoryNode" />
-            </path>
             <path>
               <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
               <item name="SeniorAssistant" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
@@ -508,11 +530,16 @@
               <item name="test" type="8a07ba80:GradleTreeStructureProvider$GradleModuleDirectoryNode" />
               <item name="java" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="SeniorAssistant" type="b2602c69:ProjectViewProjectNode" />
+              <item name="External Libraries" type="cb654da1:ExternalLibrariesNode" />
+            </path>
           </expand>
           <select />
         </subPane>
       </pane>
       <pane id="Scope" />
+      <pane id="AndroidView" />
       <pane id="PackagesPane" />
     </panes>
   </component>
@@ -662,67 +689,41 @@
     </history-entry>
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="7867000" />
+    <option name="totallyTimeSpent" value="10736000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="-7" y="-7" width="1550" height="838" extended-state="6" />
+    <frame x="-8" y="-8" width="1382" height="744" extended-state="6" />
+    <editor active="true" />
     <layout>
       <window_info anchor="right" id="Palette" />
-      <window_info anchor="right" id="sbt" />
-      <window_info anchor="bottom" id="Event Log" side_tool="true" />
-      <window_info anchor="right" id="Maven Projects" />
-      <window_info anchor="bottom" id="Database Changes" show_stripe_button="false" />
-      <window_info id="Capture Tool" />
-      <window_info id="Designer" />
-      <window_info anchor="bottom" id="Build" weight="0.32965517" />
-      <window_info anchor="right" id="Database" />
-      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
-      <window_info id="UI Designer" />
-      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="bottom" id="Messages" order="7" />
       <window_info anchor="right" id="Palette&#9;" />
       <window_info id="Image Layers" />
       <window_info anchor="right" id="Capture Analysis" />
-      <window_info anchor="bottom" id="Run" order="2" visible="true" weight="0.32965517" />
+      <window_info anchor="bottom" id="Event Log" side_tool="true" />
+      <window_info anchor="right" id="Maven Projects" />
+      <window_info anchor="bottom" id="Database Changes" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Run" order="2" />
       <window_info anchor="bottom" id="Version Control" />
       <window_info anchor="bottom" id="Terminal" />
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.25" />
-      <window_info anchor="bottom" id="sbt-shell-toolwindow" />
-      <window_info id="Learn" />
+      <window_info id="Capture Tool" />
+      <window_info id="Designer" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.24963397" />
+      <window_info anchor="bottom" id="Build" visible="true" weight="0.3290938" />
+      <window_info anchor="right" id="Database" />
       <window_info anchor="right" id="Gradle" />
-      <window_info anchor="right" id="Theme Preview" />
-      <window_info id="Favorites" side_tool="true" />
-      <window_info anchor="bottom" id="Build" order="7" weight="0.3290938" />
-      <window_info id="Designer" order="2" />
-      <window_info anchor="right" id="Palette" order="3" />
-      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.3290938" />
-      <window_info id="Image Layers" order="2" />
-      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
-      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
-      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
-      <window_info id="UI Designer" order="2" />
-      <window_info id="Favorites" order="2" side_tool="true" />
-      <window_info anchor="bottom" id="Terminal" order="7" />
-      <window_info id="Capture Tool" order="2" />
-      <window_info anchor="right" id="Capture Analysis" order="3" />
-      <window_info anchor="bottom" id="Event Log" order="7" side_tool="true" />
-      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
-      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.24963397" />
-      <window_info anchor="bottom" id="Database Changes" order="7" show_stripe_button="false" />
-      <window_info anchor="bottom" id="Version Control" order="7" />
-      <window_info anchor="right" id="Maven Projects" order="3" />
-      <window_info anchor="right" id="Gradle" order="3" />
-      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
-      <window_info anchor="right" id="Database" order="3" />
-      <window_info anchor="bottom" id="Message" order="0" />
-      <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="right" id="Palette&#9;" order="3" />
-      <window_info anchor="right" id="Theme Preview" order="3" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info id="UI Designer" />
+      <window_info anchor="right" id="Theme Preview" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info id="Favorites" side_tool="true" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
     </layout>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -736,9 +737,6 @@
     <option name="LAST_COMMIT_MESSAGE" value="non so" />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/build.gradle">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/manage/Rest.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="153">
@@ -746,23 +744,110 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/settings.gradle">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/build.gradle">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="238">
+          <caret line="34" column="29" selection-start-line="34" selection-start-column="29" selection-end-line="34" selection-end-column="35" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/device/ZWaySimpleCallback.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="221">
+          <caret line="229" column="54" selection-start-line="229" selection-start-column="54" selection-end-line="229" selection-end-column="54" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#1753#1754#0" expanded="true" />
+            <element signature="e#1809#1810#0" expanded="true" />
+            <element signature="e#1879#1880#0" expanded="true" />
+            <element signature="e#1943#1944#0" expanded="true" />
+            <element signature="e#2003#2004#0" expanded="true" />
+            <element signature="e#2058#2059#0" expanded="true" />
+            <element signature="e#2284#2285#0" expanded="true" />
+            <element signature="e#2345#2346#0" expanded="true" />
+            <element signature="e#2426#2427#0" expanded="true" />
+            <element signature="e#2491#2492#0" expanded="true" />
+            <element signature="e#2716#2717#0" expanded="true" />
+            <element signature="e#2779#2780#0" expanded="true" />
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+            <element signature="e#3285#3286#0" expanded="true" />
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+            <element signature="e#3422#3423#0" expanded="true" />
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+            <element signature="e#3549#3550#0" expanded="true" />
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+            <element signature="e#3692#3693#0" expanded="true" />
+            <element signature="e#3757#3758#0" expanded="true" />
+            <element signature="e#3978#3979#0" expanded="true" />
+            <element signature="e#4041#4042#0" expanded="true" />
+            <element signature="e#4113#4114#0" expanded="true" />
+            <element signature="e#4188#4189#0" expanded="true" />
+            <element signature="e#4255#4256#0" expanded="true" />
+            <element signature="e#4321#4322#0" expanded="true" />
+            <element signature="e#4399#4400#0" expanded="true" />
+            <element signature="e#4462#4463#0" expanded="true" />
+            <element signature="e#4532#4533#0" expanded="true" />
+            <element signature="e#4606#4607#0" expanded="true" />
+            <element signature="e#4675#4676#0" expanded="true" />
+            <element signature="e#4736#4737#0" expanded="true" />
+            <element signature="e#4805#4806#0" expanded="true" />
+            <element signature="e#4878#4879#0" expanded="true" />
+            <element signature="e#4944#4945#0" expanded="true" />
+            <element signature="e#5009#5010#0" expanded="true" />
+            <element signature="e#6219#6220#0" expanded="true" />
+            <element signature="e#6267#6268#0" expanded="true" />
+            <element signature="e#6344#6345#0" expanded="true" />
+            <element signature="e#6404#6405#0" expanded="true" />
+            <element signature="e#6459#6460#0" expanded="true" />
+            <element signature="e#6512#6513#0" expanded="true" />
+            <element signature="e#6586#6587#0" expanded="true" />
+            <element signature="e#6637#6638#0" expanded="true" />
+            <element signature="e#6695#6696#0" expanded="true" />
+            <element signature="e#6766#6767#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/device/Hue.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="301">
-          <caret line="59" column="56" lean-forward="true" selection-start-line="59" selection-start-column="56" selection-end-line="59" selection-end-column="56" />
+        <state relative-caret-position="884">
+          <caret line="59" column="56" selection-start-line="59" selection-start-column="56" selection-end-line="59" selection-end-column="56" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/device/Sensor.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="51">
+          <caret line="3" column="14" selection-start-line="3" selection-start-column="14" selection-end-line="3" selection-end-column="14" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/TestLights.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="221">
-          <caret line="13" column="43" selection-start-line="13" selection-start-column="43" selection-end-line="13" selection-end-column="43" />
+        <state relative-caret-position="51">
+          <caret line="9" column="76" lean-forward="true" selection-start-line="8" selection-start-column="4" selection-end-line="9" selection-end-column="76" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/TestSensor.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="306">
+          <caret line="19" column="33" selection-start-line="19" selection-start-column="33" selection-end-line="19" selection-end-column="33" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#161#162#0" expanded="true" />
+            <element signature="e#217#218#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
   </component>
   <component name="masterDetails">
     <states>
diff --git a/build.gradle b/build.gradle
index b6f218b..53a94e6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,5 +21,16 @@ dependencies {
     compile 'com.google.api-client:google-api-client:1.23.0'
     compile group: 'com.google.oauth-client', name: 'google-oauth-client-jetty', version: '1.11.0-beta'
 
-
+    // z-way-lib and all its dependencies (from https://github.com/pathec/ZWay-library-for-Java)
+    compile files('lib/zway-lib-0.2.9-SNAPSHOT.jar')
+    compile 'com.google.code.gson:gson:2.4'
+    compile 'org.apache.commons:commons-lang3:3.4'
+    compile 'org.eclipse.jetty:jetty-client:9.3.11.v20160721'
+    compile 'org.eclipse.jetty:jetty-http:9.3.11.v20160721'
+    compile 'org.eclipse.jetty:jetty-io:9.3.11.v20160721'
+    compile 'org.eclipse.jetty:jetty-util:9.3.11.v20160721'
+    compile 'org.eclipse.jetty.websocket:websocket-api:9.3.12.v20160915'
+    compile 'org.eclipse.jetty.websocket:websocket-client:9.3.12.v20160915'
+    compile 'org.eclipse.jetty.websocket:websocket-common:9.3.12.v20160915'
+    compile 'org.slf4j:slf4j-simple:1.7.21'
 }
diff --git a/src/main/java/device/Sensor.java b/src/main/java/device/Sensor.java
new file mode 100644
index 0000000..ece2924
--- /dev/null
+++ b/src/main/java/device/Sensor.java
@@ -0,0 +1,42 @@
+package device;
+
+import de.fh_zwickau.informatik.sensor.IZWayApi;
+import de.fh_zwickau.informatik.sensor.ZWayApiHttp;
+import de.fh_zwickau.informatik.sensor.model.devices.Device;
+import de.fh_zwickau.informatik.sensor.model.devices.DeviceList;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Sensor {
+    // init logger
+    Logger logger = LoggerFactory.getLogger(Sensor.class);
+
+    // sample RaZberry IP address
+    String ipAddress = "http://172.30.1.137:8083";
+
+    // sample username and password
+    String username = "admin";
+    String password = "raz4reti2";
+
+    IZWayApi zwayApi;
+
+    public Sensor() {
+        // create an instance of the Z-Way library; all the params are mandatory (we are not going to use the remote service/id)
+        zwayApi = new ZWayApiHttp(ipAddress, 8083, "http", username, password, 0, false, new ZWaySimpleCallback());
+    }
+
+    // get all the Z-Wave devices
+    DeviceList allDevices = zwayApi.getDevices();
+
+    public boolean IsLowLuminescence(int Luminescence) {
+        for (Device dev : allDevices.getAllDevices()) {
+            if (dev.getDeviceType().equalsIgnoreCase("SensorMultilevel"))
+                if (dev.getProbeType().equalsIgnoreCase("luminescence"))
+                    if (Integer.parseInt(dev.getMetrics().getLevel()) < Luminescence)
+                        return true;
+                    else
+                        return false;
+        }
+        return false;
+    }
+}
diff --git a/src/main/java/device/ZWaySimpleCallback.java b/src/main/java/device/ZWaySimpleCallback.java
new file mode 100644
index 0000000..44a8d09
--- /dev/null
+++ b/src/main/java/device/ZWaySimpleCallback.java
@@ -0,0 +1,233 @@
+package device;
+
+import de.fh_zwickau.informatik.sensor.IZWayApiCallbacks;
+import de.fh_zwickau.informatik.sensor.model.devicehistory.DeviceHistory;
+import de.fh_zwickau.informatik.sensor.model.devicehistory.DeviceHistoryList;
+import de.fh_zwickau.informatik.sensor.model.devices.Device;
+import de.fh_zwickau.informatik.sensor.model.devices.DeviceList;
+import de.fh_zwickau.informatik.sensor.model.instances.Instance;
+import de.fh_zwickau.informatik.sensor.model.instances.InstanceList;
+import de.fh_zwickau.informatik.sensor.model.locations.Location;
+import de.fh_zwickau.informatik.sensor.model.locations.LocationList;
+import de.fh_zwickau.informatik.sensor.model.modules.ModuleList;
+import de.fh_zwickau.informatik.sensor.model.namespaces.NamespaceList;
+import de.fh_zwickau.informatik.sensor.model.notifications.Notification;
+import de.fh_zwickau.informatik.sensor.model.notifications.NotificationList;
+import de.fh_zwickau.informatik.sensor.model.profiles.Profile;
+import de.fh_zwickau.informatik.sensor.model.profiles.ProfileList;
+import de.fh_zwickau.informatik.sensor.model.zwaveapi.controller.ZWaveController;
+import de.fh_zwickau.informatik.sensor.model.zwaveapi.devices.ZWaveDevice;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * Mandatory callback class for the Z-Way Library in use.
+ * Really trivial implementation: log all the responses at debug level.
+ *
+ * @author <a href="mailto:luigi.derussis@uniupo.it">Luigi De Russis</a>
+ * @version 1.0 (24/05/2017)
+ * @see <a href="https://github.com/pathec/ZWay-library-for-Java">Z-Way Library on GitHub</a> for documentation about the used library
+ */
+public class ZWaySimpleCallback implements IZWayApiCallbacks {
+
+    @Override
+    public void getStatusResponse(String s) {
+        this.logMessage("Status response: " + s);
+    }
+
+    @Override
+    public void getRestartResponse(Boolean aBoolean) {
+        this.logMessage("Restart response: " + aBoolean);
+    }
+
+    @Override
+    public void getLoginResponse(String s) {
+        this.logMessage("Login response: " + s);
+    }
+
+    @Override
+    public void getNamespacesResponse(NamespaceList namespaceList) {
+        this.logMessage("Namespaces are: " + namespaceList);
+    }
+
+    @Override
+    public void getModulesResponse(ModuleList moduleList) {
+        this.logMessage("Modules are: " + moduleList);
+    }
+
+    @Override
+    public void getInstancesResponse(InstanceList instanceList) {
+        this.logMessage("Instances are: " + instanceList);
+    }
+
+    @Override
+    public void postInstanceResponse(Instance instance) {
+        this.logMessage("Received a POST for the instance: " + instance);
+    }
+
+    @Override
+    public void getInstanceResponse(Instance instance) {
+        this.logMessage("The instance is: " + instance);
+    }
+
+    @Override
+    public void putInstanceResponse(Instance instance) {
+        this.logMessage("Received a PUT for the instance: " + instance);
+    }
+
+    @Override
+    public void deleteInstanceResponse(boolean b) {
+        this.logMessage("The instance has been deleted? " + String.valueOf(b));
+    }
+
+    @Override
+    public void getDevicesResponse(DeviceList deviceList) {
+        this.logMessage("Devices are: " + deviceList);
+    }
+
+    @Override
+    public void putDeviceResponse(Device device) {
+        this.logMessage("Received a PUT for device: " + device);
+    }
+
+    @Override
+    public void getDeviceResponse(Device device) {
+        this.logMessage("The device is: " + device);
+    }
+
+    @Override
+    public void getDeviceCommandResponse(String s) {
+        this.logMessage("The device command is: " + s);
+    }
+
+    @Override
+    public void getLocationsResponse(LocationList locationList) {
+        this.logMessage("Locations are: " + locationList);
+    }
+
+    @Override
+    public void postLocationResponse(Location location) {
+        this.logMessage("Received a POST for location: " + location);
+    }
+
+    @Override
+    public void getLocationResponse(Location location) {
+        this.logMessage("The location is: " + location);
+    }
+
+    @Override
+    public void putLocationResponse(Location location) {
+        this.logMessage("Received a PUT for location: " + location);
+    }
+
+    @Override
+    public void deleteLocationResponse(boolean b) {
+        this.logMessage("Location has been deleted? " + b);
+    }
+
+    @Override
+    public void getProfilesResponse(ProfileList profileList) {
+        this.logMessage("Profiles are: " + profileList);
+    }
+
+    @Override
+    public void postProfileResponse(Profile profile) {
+        this.logMessage("Received a POST for profile: " + profile);
+    }
+
+    @Override
+    public void getProfileResponse(Profile profile) {
+        this.logMessage("The profile is: " + profile);
+    }
+
+    @Override
+    public void putProfileResponse(Profile profile) {
+        this.logMessage("Received a PUT for profile: " + profile);
+    }
+
+    @Override
+    public void deleteProfileResponse(boolean b) {
+        this.logMessage("Profile has been deleted? " + b);
+    }
+
+    @Override
+    public void getNotificationsResponse(NotificationList notificationList) {
+        this.logMessage("Notifications are: " + notificationList);
+    }
+
+    @Override
+    public void getNotificationResponse(Notification notification) {
+        this.logMessage("The notification is: " + notification);
+    }
+
+    @Override
+    public void putNotificationResponse(Notification notification) {
+        this.logMessage("Received a PUT for notification: " + notification);
+    }
+
+    @Override
+    public void getDeviceHistoriesResponse(DeviceHistoryList deviceHistoryList) {
+        this.logMessage("Device histories are: " + deviceHistoryList);
+    }
+
+    @Override
+    public void getDeviceHistoryResponse(DeviceHistory deviceHistory) {
+        this.logMessage("The device history is: " + deviceHistory);
+    }
+
+    @Override
+    public void getZWaveDeviceResponse(ZWaveDevice zWaveDevice) {
+        this.logMessage("The Z-Wave device is: " + zWaveDevice);
+    }
+
+    @Override
+    public void getZWaveControllerResponse(ZWaveController zWaveController) {
+        this.logMessage("The Z-Wave controller is: " + zWaveController);
+    }
+
+    @Override
+    public void apiError(String s, boolean b) {
+        this.logError("API Error: " + s);
+    }
+
+    @Override
+    public void httpStatusError(int i, String s, boolean b) {
+        this.logError("HTTP Status Error: " + i + s);
+    }
+
+    @Override
+    public void authenticationError() {
+        this.logError("Authentication Error");
+    }
+
+    @Override
+    public void responseFormatError(String s, boolean b) {
+        this.logError("Wrong format: " + s);
+    }
+
+    @Override
+    public void message(int i, String s) {
+        this.logMessage("You've got a message: " + i + " " + s);
+    }
+
+    /**
+     * Utility method to print the log messages of this class.
+     *
+     * @param message the {@link String} to print
+     */
+    private void logMessage(String message) {
+        Logger logger = LoggerFactory.getLogger(Sensor.class);
+        logger.debug(message);
+    }
+
+    /**
+     * Utility method to print the error messages of this class.
+     *
+     * @param error the {@link String} to print
+     */
+    private void logError(String error) {
+        Logger logger = LoggerFactory.getLogger(Sensor.class);
+        logger.error(error);
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/TestSensor.java b/src/test/java/TestSensor.java
new file mode 100644
index 0000000..16fd220
--- /dev/null
+++ b/src/test/java/TestSensor.java
@@ -0,0 +1,23 @@
+import device.Hue;
+import device.Sensor;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+
+public class TestSensor {
+    Sensor sensor = new Sensor();
+    Hue hue = new Hue();
+
+    @Test
+    public void firstTestSensor() {
+        assertTrue(sensor.IsLowLuminescence(50));
+    }
+
+    @Test
+    public void secondTestSensor() {
+        if(sensor.IsLowLuminescence(50)) {
+            hue.turnOn();
+            hue.setBrightness(200);
+        }
+    }
+}