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Nice that you can select power or no power mode to lock and unlock. I wired mine with the magnet up on top of door to have both locked with 12v applied, made door more solid when yanking on it. I plugged the controller into a battery UPS like you use on your computer to keep power during outages. It was a little sticky when unlocked so I sprayed it heavily with the spray can graphite and cycled it a few times to work it in, now it works great...probably need to spray again every couple of months.