Interlogix DesignLine Crystal Wireless Garage Door Sensor (TX-8010-01-1) This is the GE Interlogix DesignLine Garage Door Sensor. The Garage Door Sensor enables you to monitor the opening of your garage door. Once the garage door opens to a35 degree angle, the sensor will go into an alarm condition turning on the siren and calling the central monitoring station. Under normal use, the sensor transmits open (trip) and close (restore). To the panel each time the garage door is opened or closed. The sensor also sends a supervisory signal to the panel every 64 minutes and is equipped with a cover tamper for added security. The sensor is designed to be mounted on the top panel of the garage door. A built-in one-second delay feature helps reduce false alarms if the garage door shakes in windy conditions.