Driveway Patrol Sensor and Receiver Kit: Patio, Lawn & Garden. When a visitor--wanted or unwanted--approaches a house on foot or in a vehicle the motion-detecting sensor unit of this warning device sends a signal to the receiver indoors, which chimes an alert. It requires three C-cell batteries for the receiver and one 9-volt battery for the transmitting sensor. ) The sensor is housed in weather-resistant plastic, installs with a screw on any surface, such as a mailbox post, garage, or door, and measures 4-1/4 inches high, 2-5/8 inches wide, and 2-1/4 inches deep. (Batteries are not included.
Shipping Weight: 2 pounds