What is the principle of wireless door magnetism?

[ Huaqiang Security Network News ]
What is wireless door magnetism?
Wireless door magnets are used to detect whether doors, windows, drawers, etc. are illegally opened or moved. It consists of a

Spindle generator system using a slip induction motor

6 The shaft-generator system with slip induction motor Nie Yansheng Liaoning Institute of Marine Engineering, Liaoning Maritime University, 6,26 machine system, and the structure of the system features and working principles are briefly analyzed. It is pointed out that the advanced circui

Buy the dance room floor to be cautious

When we purchased the dance floor, did we discuss more about its cost performance? Today's market, we can see that no matter what kind of products are very competitive, the price is a big war, businesses are not easy to sell above, and consumers can choose a cost-effective High dance floor

Password lock Yale product experience talk

Recently installed a Yale electronic lock, can enter the password, but also the kind of card, the grade is definitely higher than the star hotel, the price is around 5000-6000. Speaking of Yale electronic locks, I went to the building materials market lock shop to find out that it is a big bran

Selection of welding consumables for heat treatment of structural steel

Main products and common welding consumables
Our main products involve metallurgical machinery, port machinery, lifting machinery, bulk material handling machinery and wind power equipment, large marine crankshafts, tunnel boring equipment, low-pressure steam turbine cy