US Patent 7336150 Locker lock with master override and low power jump start

An electronic lock device for lockers of similar uses has an input for a user code (keypad or electronic key reader), and a separate input for a manager key. Contacts at the manager key include power jumper contacts, so that when a user is unable to open his assigned locker, whether this is due to a low battery in the lock or failure of the user's key or the user's forgetting a PIN code, the manager key device will open the lock.