1000' Solar Powered Wireless Driveway Monitor With Magnetometer Sensor
By Safety Technology International (STI-34100)
This improved solar powered Wireless Driveway Monitor detects when a vehicle enters or leaves your driveway. It uses a solar powered patented magnetometer sensor system. Movement of any large metallic (iron or steel) object close to the driveway sensor will transmit a signal to the receiver, causing the receiver to chime and flash.
People, animals and shadows will not trigger the driveway sensor. The sensor may be placed up to 1000 feet (line of sight) away from the receiver in your home.