Electromagnetic unit anti theft door lock working principle

The principle of action of magnetic lock (or electromagnetic lock) is the same as that of electromagnet, which is the principle of using electromagnetism and then attracting different poles, when the current passes through the silicon steel sheet, the electromagnetic lock will produce a strong suction force to tightly absorb the adsorption iron plate to achieve the effect of locking the door. As long as a small current electromagnetic lock will produce a great magnetic force, the access control system that controls the power supply of the electromagnetic lock will be powered off after identifying the correct personnel, and the electromagnetic lock can open the door if it loses its suction.

Haha, maybe you need to lubricate, put some oil. Leave it alone, just work fine. If you choose the security door of Changling, this situation will not occur.

The unit anti-theft net belongs to the maintenance scope of public facilities, and the property should be responsible for the maintenance for free, and the property does not even care about this, and it makes no sense for the owner to pay the property fee.

This is on the security door panel.

It is found on the inside of the handle of the inner panel of the security door, and the name is called the return spring gasket. >>>More

Hello landlord! As you said, it should be you, it should be the unit intercom electronic door, the doorbell does not ring, it should be a problem with the line, it is not a big problem, and it can be easily solved by finding a lock company. Generally, there are many small advertisements on the stairs and walls of the accommodation building. >>>More