Card power switch

The card power switch is a power switch that can control the power on and off by inserting a card. Usually, this kind of switch is used in hotel rooms and other places. Guests need to insert the room card to use the electrical equipment in the room, such as TV, air conditioner, etc. When guests leave the room, pull out the room card and the electrical equipment will automatically turn off to save energy. This switch can effectively save energy and reduce waste, and is an environmentally friendly power control method.