Hotel lock/card lock/temic lock/mifare lock Lock Low battery alarm: < 4.5V Hotel Lock working humidity: 20%-90%. Mortise: ------------ ANSI 5 latches with alarming function Door thickness: ----- 36mm - 65mm Material: ------------- Pure Stainless Steel, Fadeless PVD and durable for 15 years at least Power supply: ------ 4 x 1.5V AA alkaline batteries Power current: ----- 20 uA - 180mA Battery life: --------- 1 year Opening mode: ----- RF card, Mechanical key override. Trail record: -------- 200-1000 events Optional device: --- Energy Saving Switch, Elevator Controller. Guarantee : -------- One year. Certificate: ---------- CE