diff --git a/examples/Expert/13-EventNotifications/13-EventNotifications.ino b/examples/Expert/13-EventNotifications/13-EventNotifications.ino
index e7af742..089b949 100644
--- a/examples/Expert/13-EventNotifications/13-EventNotifications.ino
+++ b/examples/Expert/13-EventNotifications/13-EventNotifications.ino
@@ -12,7 +12,7 @@
 #include "HomeSpan.h" 
 #include "DEV_LED.h"     
 #include "DEV_Identify.h"      
-#include "DEV_Temperature.h" 
+#include "DEV_Sensors.h" 
 
 void setup() {
 
@@ -49,6 +49,11 @@ void setup() {
     new DEV_TempSensor();                                                                // Create a Temperature Sensor
     new SpanEvent(5000);
 
+  new SpanAccessory();                                                          
+    new DEV_Identify("Air Quality","HomeSpan","123-ABC","Sensor","0.9",0);
+    new DEV_AirQualitySensor();                                                           // Create an Air Quality Sensor
+    new SpanEvent(10000);
+
 } // end of setup()
 
 //////////////////////////////////////
diff --git a/examples/Expert/13-EventNotifications/DEV_Sensors.h b/examples/Expert/13-EventNotifications/DEV_Sensors.h
new file mode 100644
index 0000000..3816868
--- /dev/null
+++ b/examples/Expert/13-EventNotifications/DEV_Sensors.h
@@ -0,0 +1,61 @@
+
+////////////////////////////////////
+//   DEVICE-SPECIFIC LED SERVICES //
+////////////////////////////////////
+
+struct DEV_TempSensor : Service::TemperatureSensor {     // A standalone Temperature sensor
+
+  SpanCharacteristic *temp;                         // reference to the Current Temperature Characteristic
+  
+  DEV_TempSensor(ServiceType sType=ServiceType::Regular) : Service::TemperatureSensor(sType){       // constructor() method
+
+    temp=new Characteristic::CurrentTemperature();                 
+    
+    Serial.print("Configuring Temperature Sensor");   // initialization message
+    Serial.print("\n");
+
+  } // end constructor
+
+  void event(){
+
+    temp->setVal(22.0);
+       
+  } // event
+};
+      
+//////////////////////////////////
+
+struct DEV_AirQualitySensor : Service::AirQualitySensor {     // A standalone Air Quality sensor
+
+  SpanCharacteristic *airQuality;
+  SpanCharacteristic *o3Density;
+  SpanCharacteristic *no2Density;
+  SpanCharacteristic *so2Density;
+  SpanCharacteristic *pm25Density;
+  SpanCharacteristic *pm10Density;
+  SpanCharacteristic *vocDensity;
+  
+  DEV_AirQualitySensor(ServiceType sType=ServiceType::Regular) : Service::AirQualitySensor(sType){       // constructor() method
+
+    airQuality=new Characteristic::AirQuality(1);                 
+    o3Density=new Characteristic::OzoneDensity(40.7);                 
+    no2Density=new Characteristic::NitrogenDioxideDensity(13.2);                 
+    
+    Serial.print("Configuring Air Quality Sensor");   // initialization message
+    Serial.print("\n");
+
+  } // end constructor
+
+  void event(){
+
+    airQuality->setVal(1);
+    o3Density->setVal(10.8);
+    if(!random(2)){
+      Serial.println("HERE\n");
+      no2Density->setVal(50.3);
+    }
+       
+  } // event
+};
+      
+//////////////////////////////////
diff --git a/examples/Expert/13-EventNotifications/DEV_Temperature.h b/examples/Expert/13-EventNotifications/DEV_Temperature.h
deleted file mode 100644
index 4095f94..0000000
--- a/examples/Expert/13-EventNotifications/DEV_Temperature.h
+++ /dev/null
@@ -1,26 +0,0 @@
-
-////////////////////////////////////
-//   DEVICE-SPECIFIC LED SERVICES //
-////////////////////////////////////
-
-struct DEV_TempSensor : Service::TemperatureSensor {     // A standalone temperature sensor
-
-  SpanCharacteristic *temp;                         // reference to the Current Temperature Characteristic
-  
-  DEV_TempSensor(ServiceType sType=ServiceType::Regular) : Service::TemperatureSensor(sType){       // constructor() method
-
-    temp=new Characteristic::CurrentTemperature();                 
-    
-    Serial.print("Configuring Temperature Sensor");   // initialization message
-    Serial.print("\n");
-
-  } // end constructor
-
-  void event(){
-
-    temp->setVal(22.0);
-       
-  } // event
-};
-      
-//////////////////////////////////
diff --git a/src/HAP.cpp b/src/HAP.cpp
index 0d0ba6c..a072177 100644
--- a/src/HAP.cpp
+++ b/src/HAP.cpp
@@ -1111,7 +1111,7 @@ void HAPClient::checkEvents(){
           Serial.print(homeSpan.Events[i]->service->Characteristics[j]->iid);
           Serial.print("\n");          
               
-          homeSpan.Events[i]->service->Characteristics[j]->isUpdated=false;         // reset isUpdated flag
+          homeSpan.Events[i]->service->Characteristics[j]->isUpdated=false;          // reset isUpdated flag
         }
       } 
     }
diff --git a/src/Services.h b/src/Services.h
index 1a5d7fc..1ffd9d4 100644
--- a/src/Services.h
+++ b/src/Services.h
@@ -83,6 +83,8 @@ namespace Characteristic {
   
   struct Active : SpanCharacteristic { Active(uint8_t value=0) : SpanCharacteristic{"B0",PR+PW+EV,(uint8_t)value}{} };
 
+  struct AirQuality : SpanCharacteristic { AirQuality(uint8_t value=0) : SpanCharacteristic{"95",PR+EV,(uint8_t)value}{} };
+
   struct Brightness : SpanCharacteristic { Brightness(int value=0) : SpanCharacteristic{"8",PR+PW+EV,(int)value}{} };
 
   struct ColorTemperature : SpanCharacteristic { ColorTemperature(uint32_t value=50) : SpanCharacteristic{"CE",PR+PW+EV,(uint32_t)value}{} };
@@ -99,10 +101,18 @@ namespace Characteristic {
 
   struct Name : SpanCharacteristic { Name(char *value) : SpanCharacteristic{"23",PR,(char *)value}{} };
 
+  struct NitrogenDioxideDensity : SpanCharacteristic { NitrogenDioxideDensity(double value=0) : SpanCharacteristic{"C4",PR+EV,(double)value}{} };
+
   struct On : SpanCharacteristic { On(boolean value=false) : SpanCharacteristic{"25",PR+PW+EV,(boolean)value}{} };
   
   struct OutletInUse : SpanCharacteristic { OutletInUse(boolean value=false) : SpanCharacteristic{"26",PR+EV,(boolean)value}{} };
 
+  struct OzoneDensity : SpanCharacteristic { OzoneDensity(double value=0) : SpanCharacteristic{"C3",PR+EV,(double)value}{} };
+
+  struct PM10Density : SpanCharacteristic { PM10Density(double value=0) : SpanCharacteristic{"C7",PR+EV,(double)value}{} };
+
+  struct PM25Density : SpanCharacteristic { PM25Density(double value=0) : SpanCharacteristic{"C6",PR+EV,(double)value}{} };
+
   struct RotationDirection : SpanCharacteristic { RotationDirection(int value=0) : SpanCharacteristic{"28",PR+PW+EV,(int)value}{} };
 
   struct RotationSpeed : SpanCharacteristic { RotationSpeed(double value=0) : SpanCharacteristic{"29",PR+PW+EV,(double)value}{} };
@@ -111,10 +121,28 @@ namespace Characteristic {
 
   struct SerialNumber : SpanCharacteristic { SerialNumber(char *value) : SpanCharacteristic{"30",PR,(char *)value}{} };
 
+  struct SlatType : SpanCharacteristic { SlatType(uint8_t value=0) : SpanCharacteristic{"C0",PR,(uint8_t)value}{} };
+
+  struct SmokeDetected : SpanCharacteristic { SmokeDetected(uint8_t value=0) : SpanCharacteristic{"76",PR+EV,(uint8_t)value}{} };
+
+  struct StatusActive : SpanCharacteristic { StatusActive(boolean value=true) : SpanCharacteristic{"75",PR+EV,(boolean)value}{} };
+
+  struct StatusFault : SpanCharacteristic { StatusFault(uint8_t value=0) : SpanCharacteristic{"77",PR+EV,(uint8_t)value}{} };
+
+  struct StatusJammed : SpanCharacteristic { StatusJammed(uint8_t value=0) : SpanCharacteristic{"78",PR+EV,(uint8_t)value}{} };
+
+  struct StatusLowBattery : SpanCharacteristic { StatusLowBattery(uint8_t value=0) : SpanCharacteristic{"79",PR+EV,(uint8_t)value}{} };
+
+  struct StatusTampered : SpanCharacteristic { StatusTampered(uint8_t value=0) : SpanCharacteristic{"7A",PR+EV,(uint8_t)value}{} };
+
+  struct SulphurDioxideDensity : SpanCharacteristic { SulphurDioxideDensity(double value=0) : SpanCharacteristic{"C5",PR+EV,(double)value}{} };
+
   struct SwingMode : SpanCharacteristic { SwingMode(uint8_t value=0) : SpanCharacteristic{"B6",PR+PW+EV,(uint8_t)value}{} };
 
   struct CurrentTemperature : SpanCharacteristic { CurrentTemperature(double value=0) : SpanCharacteristic{"11",PR+EV,(double)value}{} };
 
   struct Version : SpanCharacteristic { Version(char *value) : SpanCharacteristic{"37",PR,(char *)value}{} };
-  
+
+  struct VOCDensity : SpanCharacteristic { VOCDensity(double value=0) : SpanCharacteristic{"C8",PR+EV,(double)value}{} };
+
 }
diff --git a/src/src.ino b/src/src.ino
index 8d8b76d..0ee2e57 100644
--- a/src/src.ino
+++ b/src/src.ino
@@ -1,5 +1,5 @@
 
 #error THIS IS NOT COMPILABLE CODE
 
-This is a dummy .ino file that allows you to easily edit the contents of this library using the Arduino IDE.
-The code is NOT designed to be compiled from this point.  Compile and test the library using one of the examples.
+// This is a dummy .ino file that allows you to easily edit the contents of this library using the Arduino IDE.
+// The code is NOT designed to be compiled from this point.  Compile and test the library using one of the examples.