Safety Technology International Inc.
Wireless Driveway Monitor
The Wireless Driveway Monitor uses a solar-powered patented magnetometer sensor system to detect when a vehicle enters and leaves. 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 sensor. It may be placed as far as 1,000 feet (line of sight) away from the receiver and does not have to be buried into the ground.