Order Now Safety Technology International STI-34151 Additional Wireless Sensor for use with STI-34150

This additional transmitter is for use with the STI-34150 battery-operated Wireless Driveway Monitor. It uses a patented magnetometer sensor system. Movement of any large metallic (iron or steel) object close to the driveway sensor will cause the sensor t It uses a patented magnetometer sensor system Movement of any large metallic (iron or steel) object close to the driveway sensor will cause the