What is the wiring of the hotel card?

Connection method of plug-in power switch:

1, there is a mark on the switch, which can be roughly divided into two types, one is common to the zero line.

2. There are three terminals. Li is connected to the incoming live wire, Lo is connected to the outgoing live wire, and N is connected to the neutral wire.

3. The other four terminals, Li is connected to the live wire, Ni to the zero wire, Lo to the live wire and No to the zero wire.

Plug-in card power switch, also known as power switch, energy-saving switch, energy-saving switch. Mainly used in hotels and guesthouses. When the room is vacant, cut off the power supply to the room. So as to realize electricity safety and energy saving.

Card power switch is generally composed of high and low voltage power conversion part, identification card part and output part. Among them, there are many ways to convert power supply, such as switching power supply, resistance-capacitance step-down, transformer and so on.

1. principle: when inserting the card, press a microswitch to make the 555 integrated block work, control a thyristor, turn on the relay, make the phase line conductive through the contact of the relay, and supply power to the room. When the card is taken out, the 555 integrated circuit continues to control the circuit. After a certain delay, the 555 integrated circuit does not output voltage, turning off the thyristor, making the relay lose power, thus disconnecting the power supply of the room.

2. The power switch is specially designed for the energy saving and safety of hotels or office buildings. Tourist entrance

When living or employees go to work, guests or employees conveniently insert the room card (door opening card) into the access control switch at the door side of the room, connect the main power supply in the room, and use electrical equipment (lighting, air conditioning, TV, etc. ) can be used in the room; When the guest leaves the room, the guest can conveniently take out the door opening card or the electric card (the guest or employee must take out the card because the guest will use the card to open the door again), and the power-saving switch will be automatically turned off after a delay of 15 seconds to ensure the energy saving and electricity safety of the hotel or office building.