ALC AHSS11 Door & Window Sensor, White

Simply peel and stick the 2-piece sensor to any window or door and its frame for secure wireless connection. This 2-piece device connects with a magnet across opening Window/door sensors. Communicate with the control hub to alert smartphones and tablets of a breach in a device when the system is armed. Can integrate up to 36 accessory devices to protect all vulnerable points of entry (products sold separately).