How to install the plug-in card power switch

1. There is a mark on the back of the plug-in card power switch, which can be roughly divided into two types, one is universal for zero line. As shown in the figure.

2. There are three terminals on the back of the card power switch. 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.

Extended data:

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.

The hotel uses a door-opening card to get electricity. When the guest leaves the room, he holds the door opening card (the guest must pull it out because the guest will use it to open the door again), and the power-saving switch will automatically cut off the power supply of the hotel after a delay of 20 seconds.

Not only can it bring direct economic benefits to the hotel (save a lot of electricity bills), prolong the service life of room appliances, improve the safety factor of room electricity consumption, but also effectively realize the hotel's energy saving and investment cost minimization, and achieve the effect of "energy saving and emission reduction" of the hotel.

Electric power safety:

If the guests go out without turning off the hotel's electrical appliances and the waiter doesn't notice the guests go out, the hotel's electrical appliances will work for a long time. Long-term operation of electrical appliances will lead to heating of the electrical appliances themselves. If the electrical appliance is overheated, it will shorten its service life or burn it out, and even cause a fire alarm.

References:

Baidu Encyclopedia-Plug-in power switch