This is our first installation of the just released DC series of LiftMaster Gate Operators. This is a dual control panel pair of model LA400DC swing gate operators. This master / slave pair uses the built-in network radio for the master / slave function and there are no wires connected between control panels. This feature is great when there is a driveway already in place that you do not want to disturb. The next picture is the LiftMaster Telephone Entry System Model EL-25 in silver finish.