The Wireless Door/Window Alert is designed to monitor any door or window within your house. When the monitored window or door is opened, the receiver will flash along with an alert beeping or alarm. This set includes one sensor, which transmits a wireless signal to a receiver (also included) you can place anywhere in your home. The Main Unit can work with up to 16 sensors. This device is compatible with the following SkyLink sensors: Wireless motion sensor Garage door alert sensor Door/window alert sensor.
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