BUNKER HILL SECURITY Driveway Alert System, Wireless

This wireless alert system uses a wireless receiver in your home that chimes when the infrared

 driveway alert sensor outside detects motion, so you’ll be prepared for that unexpected knock at the

 door or beep in your driveway. This wireless alert systems wireless motion sensor mounts outside

 on a post or wall and you can set the receiver anywhere in your house within 400 ft. of the sensor.

Completely wireless installation

Weather-resistant plastic

400 ft. range

Infrared sensor

Batteries required: 3 C and one 9 volt (sold separately).

Sensor range: 30 ft. within a 40° field

Radio range: 200 ft.

Radio frequency: 433 MHz

SHIPPING IN USA 48 STATES $4.99