Is it a visitor, the UPS truck, or an intruder? The Driveway Alert System detects vehicles or pedestrians with a remote sensor and sends an instant alert back to the receiver in your home. Install up to three sensors to protect multiple zones and entrances. The outdoor sensor is weather-resistant and four AA batteries will last up to 6 months. The compact indoor receiver plugs into the wall and has battery back-up. It can also be connected to your existing home security system.

Includes one outdoor sensor and indoor receiver.