US Patent 10069235 Modular device control unit

An apparatus includes a backplate including at least one backplate contact, a cover, and a lock. The at least one backplate contact facilitates an electrical connection to a power source. The cover shields the at least one backplate contact when the cover is placed in a closed position. The cover is further translatable to an open position to conditionally expose the at least one backplate contact. The lock applies a force to the cover and positions the cover in the closed position unless a counter-force greater than the force is received by the lock.