This wireless universal alert from STI can be used to monitor gates, windows, medicine cabinets, garage doors, and much more. The device will let you know whenever the monitored site is tripped by sending a wireless signal to the receiver. The programmable 4-channel voice receiver offers 10 tones/tunes and 53 selectable words available in English or Spanish. Has a supervised battery and signal reception and can operate up to 1000 feet (305m).