Wireless Burglar Alarm

Product Description

The small, simply security system include 4 parts, Wireless siren, Wireless PIR motion detector, Wireless door sensor and Wireless controller. How the system working? The Wireless siren has a receiver, it can be turned on/off by the wireless controller, the wireless PIR motion detector and wireless door sensor transmit signal to the wireless siren if they are triggered. How to install the system? All the 4 parts are wireless, removable, user only needs to screw the door sensor at the border of the door. All the 4 parts use battery power supply, you never seek a **0/**0V outlet, you can put/hang them anywhere.