The Wireless Probe Alarm is an extremely reliable driveway alarm that uses a concealed metal detecting probe to detect vehicles (similar to traffic lights). 

Kit includes one transmitter, one receiver & metal detecting probe.

The transmitter operates on four 3 volt batteries and uses a metal detecting probe. The probe is buried parallel to the driveway, and will detect vehicles passing by within approx. 3.5m and sends a signal to the DCR-4000 receiver up to 1600 metres (1.6km)* away.

The wireless system is ideal in situations where there may be animals or people that would cause false alarms when you only want to detect vehicles.

The WPA-4000 is the least noticeable of our wireless systems as the transmitter box can be mounted on a tree or post out of site, and the probe connected by wire, is buried at the location to be monitored.