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.
Designed as a stand alone tone door alarm and/or an add on sensor for the Electronic Barking Dog Alarm and HomeSafe wireless siren with flashing light systems.