That will remain closed, that is locked in the door or outside the door has just been found to remain open ... ... all access control systems are like this? Is it not safe? Or what is the power to reserve it? Confused ... ... ask the big god to help
For example, the general office will use power-off lock-type electric lock, electric lock mouth, so that fire or other possible power outage when the evacuation of personnel. And the file room, the engine room and other personnel less access and security requirements of the higher places should choose to open the power lock, electric lock, to ensure that the accident when the safety of indoor items. Compared to the above mentioned several electric locks, the motor lock is more advanced. It has a complete key lock structure, which joined the electric lock / unlock device, you can use the circuit control lock opening and closing, and in the power, it can be the same as the normal key lock, lock The For more life scenes, the price is higher. On the backup battery, described in the above-mentioned several locks, in addition to the motor lock after the power failure can not normally open and close. In the case of need to increase the backup circuit in the backup battery, according to the battery type (usually lead-acid battery) and the capacity of the difference can usually continue to maintain after the power outage system hours to tens of hours of time The
Also for the reasons mentioned earlier, this lock will automatically unlock the power. Electric lock like an automatic latch, electric lock like the door on the door of the lock, the nature of these two locks are mechanical lock, but according to the default location of the different plugs, you can have power off the lock (power off Plug, latch automatically retract) and power on the lock (power after the plug, the latch automatically pop) two. These two locks can be based on the actual situation, select the type of lock.
Common access control systems use several different types of locks, electromagnetic locks, electrical locks, electrical locks, and motor locks (the location may vary slightly). Electromagnetic lock is basically a combination of electromagnet + iron, by the power of magnetic, pull the iron block to lock the door, usually in accordance with the magnetic equivalent of the number of kilograms to calculate the size of electromagnetic lock force.
