What is the principle of hotel card access to electricity? If I insert a card the size of a room card, can I get electricity?

In the hotel, the principle of plug-in card to take electricity is to use the reflection of light to design the equipment to take electricity, and the resistance of photosensitive rheostat changes with the intensity of light. For example, there is always an infrared transmitter in the plug-in switch. When the card is inserted, the infrared ray is reflected by the card to the photosensitive rheostat, and when the photosensitive rheostat meets light resistance, the circuit is connected and electricity comes.

If you use a card other than your room card, there will be no electricity. Because the card identification function is added to the current plug-in switch, this plug-in switch can only be identified successfully if it is powered by a special room card.

Plug-in power switch is suitable for all kinds of star hotels, motels, budget hotels, apartments and office buildings. It can effectively save electricity for the hotel and control all fixed room lighting and switch sockets. Other cards or pieces of paper can't get electricity, which effectively saves the energy in the guest room.

Plug-in power switch is an energy-saving product specially designed for hotel rooms, also known as plug-in power switch. Hotel guests can use the lighting, TV, air conditioning and other equipment in the room when they enter the room, and take out the key card when they leave the room (guests must pull it out when they leave the room, because they need it to open the door when they return to the room), and the total power supply of the room can be automatically cut off within 15 seconds.

Baidu Encyclopedia _ Plug in the card and power it on