How automatic sensing doors work

When the automatic door sensor detects that someone enters, it transmits the pulse signal to the main controller. After the main controller judges, it notifies the motor to run, and monitors the motor rot.......

Living room with a downlight or a good spotlight

Is there a downlight or spotlight in the living room ? Some people say that spotlights are good. Some people say that the downlights are good? Which is better and what is the difference? Let's take a look at the living room with a downlight or a spotlight

Flange gate valve installation precautions

Flange gate valve is a fluid resistance is small, the sealing surface of the media by the brush and erosion of small, simple body, short structure length, manufacturing process is good, wide range of gate valve, such products are installed More problems need attention, not only to consider the.......

New stone renovation plan

Marble and granite surfaces are dirty, worn, scratched and can be refurbished. Professional renovation equipment must be used for refurbishment. When renovating, the special grinding discs and polishing p.......

Homemade screw-free screwdriver

Introduction He Xueying People's Liberation Army No. 252 Hospital Baoding City 071000 Lower extremity diseases such as fractures of femoral head necrosis and saphenous varicose veins are surgical diseases. Before the operation begins, the roving nurse needs to cooperate with the assista.......