The icon of a sensor on the map indicates its current state:

Icon	State
	Sensor armed
	Alarm event confirmed
	Sensor connected to the System
	Sensor disconnected
	Sensor connection lost

Also, the current state of the sensor is indicated by the icon background color:

To control a sensor on the map, click its icon, and the context menu will appear:

Select a command to perform a required action (see Operations with sensors).