... cylinders, diesel tanks etc.Operation: 1) The lock adopts two steps to operate, the first step ... the key core as to make the lock pole lock the second step, when you hear the ... the battery. 4) When replacing battery, open the lock with the key, remove the two screws beside ... wheel, window, toolbox, truck, trailer, boat, shed, side gate, container, public storage unit, cart, garden machinery, locker, ...