Keycard switch is a device used to control the functioning of lights, fans, air conditioners along with the entire range of lighting and temperature control facilities in range. Plus, no batteries and wires are required for the operation of such switches. Inserting a card into switch allows energy to transmit the signal, which control all the devices connected to receiver. It takes only some minutes to install and configure. Use of traditional keys to open the hotel rooms is a thing of past already. Today, most of the hotels offer hi-tech keycards that permit guests effortless entry to rooms.
