Insteon 2843-222 NST2843222 Door/Window Sensor, White Excellent range - up to 150' from nearest access point or any dual-band device Link with other Insteon devices to be alerted when a door or window is opened Battery-operated for easy installation Automatically control lights and appliances when doors open and close Wire standard security sensors to TriggerLinc to monitor several doors and windows Battery-operated for easy installation Excellent range - up to 150-Feet from nearest Access Point or other dual-band product Battery included Automatically control lights and appliances when doors open and close Wire standard security sensors to TriggerLinc to monitor several doors and windows Battery-operated for easy installation Excellent range - up to 150-Feet from nearest Access Point or other dual-band product Battery included