They will reliably detect a vehicle, including motorcycles, passing within 15 feet of the buried probe. These probes may be buried beside a driveway or under a driveway. Presence sensors are used when you need to know if a vehicle is above the sensor, whether or not it is moving. If you want to know if a fork lift is parked in its storage location, or if a car is stopped in the swing area of a gate, a presence sensor is needed. Presence sensors use a coil buried under the detection area.
Installation usually involves using a pavement saw to cut a groove into the pavement for the coil.
A sealing compound is poured into the grove to fill over the coil. Sensor is an easy to install motion sensor that is very reliable. It is tripped by magnetic changes. That means animals don't trip it, but cars and motorcycles do. Do not run the probe cable right next to AC lines.