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. The door and window sensor will alert you to any attempted break-in. Uses one 9-volt battery (not included). Easily protect every window and door of your home.
- Easy Installation
- 100% Wireless – Powered by a 9-volt battery
- 300 ft RF range