First attempt at adding Z-wave COMMAND_CLASS_ALARM

homeassistant/components/sensor/zwave.py

@@ -73,6 +73,9 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
     elif (value.command_class == zwave.COMMAND_CLASS_METER and
           value.type == zwave.TYPE_DECIMAL):
         add_devices([ZWaveMultilevelSensor(value)])
+        
+    elif value.command_class == zwave.COMMAND_CLASS_ALARM:
+        add_devices([ZWaveAlarmSensor(value)])
 
 
 class ZWaveSensor(Entity):
@@ -216,3 +219,17 @@ class ZWaveMultilevelSensor(ZWaveSensor):
             return TEMP_FAHRENHEIT
         else:
             return unit
+
+class ZWaveAlarmSensor(ZWaveSensor):
+    """ A Z-wave sensor that sends Alarm alerts 
+    
+    Examples include certain Multisensors that have motion and vibration capabilities.
+    Z-Wave defines various alarm types such as Smoke, Flood, Burglar, CarbonMonoxide, etc. 
+    This wraps these events. 
+    
+    COMMAND_CLASS_ALARM is what we get here. 
+    """
+    @property
+    def state(self):
+        """ Returns the state of the sensor. """
+        return str(self._value.data)

homeassistant/components/zwave.py

@@ -37,6 +37,7 @@ COMMAND_CLASS_SENSOR_BINARY = 48
 COMMAND_CLASS_SENSOR_MULTILEVEL = 49
 COMMAND_CLASS_METER = 50
 COMMAND_CLASS_BATTERY = 128
+COMMAND_CLASS_ALARM = 113 # 0x71
 
 GENRE_WHATEVER = None
 GENRE_USER = "User"
@@ -53,7 +54,8 @@ DISCOVERY_COMPONENTS = [
      DISCOVER_SENSORS,
      [COMMAND_CLASS_SENSOR_BINARY,
       COMMAND_CLASS_SENSOR_MULTILEVEL,
-      COMMAND_CLASS_METER],
+      COMMAND_CLASS_METER,
+      COMMAND_CLASS_ALARM],
      TYPE_WHATEVER,
      GENRE_USER),
     ('light',