Patented lock from Metra is highly reliable and secure electro-motor driven lock. Only Hi-tech, non-corrosive, minimum maintenance parts are used in its production. It electronically controls locking and unlocking process (it will work being mounted upside down or at any desired degree). Its reliability ensures there are no uncertain situations. Constructed and mounted inside a locker (no visible lock parts on locker doors) to enable clean locker door design. More resistant against vandalism with security features. Patented lock design compensates for shabby locker doors and hinge wear, which may occur over time. Suitable for all sorts of cabinet materials (Metal, HPL, Wood, etc.). It can be mounted into new or existing lockers.