... Smart touch screen switch fpr hotel with door bell, clean, do not disturb, wait functions Specifications1. Multicolor combination, Modular design 2 ... .With the special card, you can open the door, and just insert the same car, you can gain power of the ... / kWh = 7117.5USD. Electrical Safety of hotel ReservationIf the guests do not turn off the electrical equipment before going out, and ...