mighty mule driveway gate opening sensor 100 ft. wired x 12 ft. magnetic field

100 ft. Wired Driveway Vehicle Gate Opening Sensor. The Driveway Vehicle Exiting Sensor allows a vehicle to drive past the sensor's 12 ft. electromagnetic field that will open your gate automatically, allowing guests the ability to exit without a remote (FM135,FM134 & MM3BT).

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