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. The device is wireless and has a 400-foot range. It requires three C-cell batteries for the receiver and one 9-volt battery for the transmitting sensor. (Batteries are not included.) 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. The portable receiver has an identical housing, can be set to chime high or low (or turned off), and measures 5 inches high, 3-5/8 inches wide, and 1-1/2 inches deep. –Fred Brack
TV3731 Features: -Driveway patrol. -Infrared wireless alert system. -Used to monitor the mailbox, garage, driveway or countless other places. -Battery operation and 400 foot range means no wiring is necessary. -Receiver emits an audible tone when a vehicle or person passes the sensor. -Installs in seconds. -Dimensions: 2.25” H x 4.83” W x 6” D.
- Product Dimensions: 10.1 x 7.1 x 3.1 inches ; 1.3 pounds
- Shipping Weight: 1 pounds
- Shipping: This item is also available for shipping to select countries outside the U.S.
- ASIN: B0000645RH
- Item model number: 1689-6