Vehicle Sensing Driveway Alarms all use magnetic, metal sensing probes to detect moving metal. The probes can be buried, or just placed near the area you wish to monitor. With metal sensing probes; you will never pick up animals, people etc. and will only receive an alarm when a large metal object such as a vehicle moves nearby.
Never have a false alarm with our probe driveway sensors! They only detect moving metal so you will never receive a false alarm from pets, deer etc..