... ,No cable 4.battery lifetime,Contact key hotel safe lock,Smart card lock, hotel ic lock, door lock hardwareModel: ET500 IC IC ... when batteries replaced are needed; 4.Intelligent management: Intelligent IC card registration, deletion, emptiness management; 5.Intelligent checking: Because of functions ... time:3-5days (by DHL,UPS..air.) hotel safe lock,Smart card ic lock, door lock hardware ET500IC-G