The Mier DA-500 Driveway Alerting Vehicle Sensor is a buried sensor that can be used to set up a perimeter around your driveway to alert you about incoming vehicles. The best part about this device is that it won't send you any false alarms since the magnetic probe will only detect large metal objects. When something is detected, this deivce sends a signal to your control box in your home to notify you about a vehicle in your driveway.to that vehicle. Sensativity on this device can also be adjusted.
Magnetic Probe Vehicle Sensor - Support
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Magnetic Probe Vehicle Sensor - Included
1 - Magnetic Probe Vehicle Sensor with choice of wire length