... voltage alarm,unlock alarm 3/.Low power consumption Hotel Room Security Digital Lock,Smart Card IC Lock, Door Lock Hardware ... override -Five-latches mortise,deadbolf function Hotel Room Security Digital Lock 1. Suitable for hotel room, apartment,office,reisdential door;2. Door openning ... less than 4.8V .Opening method:Mifare card/Mechanical keyWorking Temperature:-10 °C -70 °CReading Range:<3 cm.Door ...