Driveway Sensor Wireless - Driveway Motion Detetcor with 500ft Wireless Range,Driveway Motion Sensor Alarm Waterproof Motion Sensor & Detector for Home,Yard,Garage (1 Driveway Sensor + 1 Receiver). The unit works good. My driveway is not very long, so it works much easier. Also, you can add more sensors on to the system. Greatvalue #Viralix #Bistee #Hubery