Is there electricity when the room card is plugged in and the air conditioner is plugged in

Only by plugging in the power supply can there be electricity, because this network has many advantages. When staying in a hotel, the key card is always inserted, which has two advantages. First, it can be electrified by plugging in the power supply, so as to prevent the waste caused by keeping the electric appliance on when no one is around. The second is to put it at the door to prevent you from losing your key card when you check in and unable to check out. Now the design of the hotel is to plug in the key card before it can be officially powered on. This is an advanced design concept, so it must be inserted all the time.