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  • 【433MHz Compatible】Theis wireless window/door sensor can work with any 433MHz home and business security alarm system.
  • 【How does window/door sensor work】 Fix the windowdoor sensor to the door(2 side), and make sure when the door or window are closed, they can be leaned together. If the doors or windows are opened,the 2 parts of the door sensor are separately, then it will send singal to the main unit( alarm system) to trigger the alarm and then send alert to your phone!
  • 【Not easy to fall off】Compared with the general sensors on the market, Infrared PIR Detector and the Window/Doors Sensor both are using 3M double-sided adhesive, strengthen the viscosity to prevent to fall off easily.
  • 【Specification】Emission Frequency:433MH. Emission Distance:>=120 m (Open area). Working Temperature:-10℃ ~50 ℃.Triggering Distance:25-35mm. Power by 3V Button Battery(Already includes for your convenient using), it will flash with red light when it is out of power.

New Door & Window Alarm Sensor