Mighty Mule Wireless Driveway Alarm (FM231)

The wireless driveway alarm alerts you when a vehicleenters or exits your property. When a vehicle passes the sensor, the indoorreceiver emits a chime. It has a wireless range of 400′ (121.9 m) and will notbe activated by people, animals or wind. The indoor receiver can be mounted ona table or on the wall. Multiple indoor receivers (up to 3) can be added formore convenience. Detects moving vehicles; not a motion sensor. From theManufacturer Keep track of vehicles entering or exiting your property with theMighty Mule Driveway Alarm. (FM131) When a vehicle passes the sensor, thereceiver emits an audible tone. Easy to Install and stake is included in kit.The electromagnetic sensor will sense large metal objects and send a signal tothe interior base station to let you know someone is there. Install thebatteries, near the installation site so the sensor can ‘learn’ the area. Ifthe batteries are installed in the home; the unit may not function properly.