What is the hotel room card for?

The main function of the room card is to open the door and insert the card to get electricity, and then all kinds of electrical appliances in the room can be used normally. Generally, each door will be equipped with a key, but this key will only be used if the door is locked or the card cannot be opened normally. Guests staying in the hotel can only get the room card when they open the room, and the mechanical key will not be provided to you. Generally, the hotel room card is about the same size as the bank card. The hotel name, LOGO, telephone number and other information will be printed on it, and it should be returned to the hotel when checking out. Of course, some hotels don't put too much emphasis on checking out and returning the card, or if you lose it and need compensation, you don't have to return the card to the hotel.