... ,good performance, excellent prices,waterproof key,securi electronic locker lock with RFID key, zinc alloy(EM211) Material: zinc alloyKey: ... 300gFunction:1. Color: gold or silver2. Set single and double cards, general card (unlock different locks)3. Testing tongue ... (whether closes in place), tamperproof alarm, thwarted alarm4. LED and sound reminder, low voltage alarm, emergent external power ...