Minco has numerous brake lock systems and they have had them for a great many years from lever locks to electric locks.
They are a good locking device, did find one issue a few decades back with vacuum boosted brakes if you had real good vacuum in your booster and set your brakes with the electric lock you could have problems getting it to release as after flipping the switch off you had to apply greater pressure to the brake system then was applied when you set it as the 0ne way check had to be released by the greater pressure.
Brake Locks | MICO, Inc.