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Door and Window Sensor
This HOMESAFE WIRELESS HOME SECURITY SENSOR is a double sensor that detects vibration and when your door/window has been opened. It has a wireless radio frequency range of 300 feet. When triggered the RF signal activates the alarm. Uses one 9-volt battery (not included). Easily protect every window and door of your home.
For use with the Wireless home security system (HA-SYSTEM).