The Wireless Driveway Alarm System has an infrared motion sensor (mounted on a wall or post) that monitors a 30' area over 40 degrees. When motion is detected, the motion sensor transmits a radio signal to the in-house receiver up to 400' away. The driveway alarm receiver then warns you of a visitor presence with a loud "ding-dong" alert sound.
Wireless Driveway Alarm Receiver requires three "C" batteries (not included) ; Wireless Driveway Alarm Motion Sensor requires one 9v battery (not included).
Benefits of using a Wireless Driveway Alarm System: