... sensor Resistant corrosion , Resistant bad weather, Resistant physical destory, Waterproof . cable diameter : 12 mm 3 pcs AG13(4.5v) button batteries ... wire lock usage direction:Patent:200820164981.31. The lock adopts two steps to operate, the first step can only develope the ... replacing battery , open the lock with the key , remove the two screws beside the lock hole , take out the rubber washer ...