Designed to elevate the experience for facilities and users, the Master Lock 3685 Electronic Built-In Locker Lock combines a modern design with premium materials to offer improved functionality. The Electronic Built-In Locker Lock offers a new level of innovation with its high-visibility display screen for intuitive operation, long battery life to reduce operating costs, and anti-jamming features for reliable security. Suitable for most lockers - metal, wood or phenolic. Reversible design works on lockers with left or right hinges. Easy to retrofit. Strike plate included.