... times,long-term with large inventories,good performance, excellent prices,waterproof key,securi electronic locker lock with RFID key, zinc alloy(EM211 ... whether closes in place), tamperproof alarm, thwarted alarm4. LED and sound reminder, low voltage alarm, emergent external power supply.5 ... battery b. provide centralized power supply of small size lock body)Alarm voltage: < 4.6 VStatic power: < 1.5 ...