Once movement is detected, the alarm will turn on. The Driveway Alarm also has a chime mode to alert you as well. This alarm has many functions. It can be used to let you know when a child is leaving the home. It can be used to alert store owners when customers arrive. Keep an eye on almost anything. You can use multiple units in 1 location, however, only 1 sensor can be used per receiver.
This system is wireless, so it's very easy to Install this portable security wherever you need it: Home, Apartment, Trailer, Boat, Storage, Motor Homes, Camping, Hotel, Attic, Driveway, etc.
A PIR Wireless sensor and receiver, which provides wireless RF Transmission up to 400 ft. The PIR sensor detects motion and triggers receiver to sound an alarm or chime (depending on the setting you select). The PIR wireless sensor is water resistant. A Hi/Low switch allows you to adjust alarm volume to meet your needs. The sensor requires a 9v battery to operate (not included). The receiver requires 3 C size batteries (not included). The system is compatible with a DC adapter (it needs to be a DC 6V 200mA, 120v 2 flat pin adapter) if you which to add one at some later point. There is an LED Battery low indicator for transmitter and receiver.
No wiring! easy to install!