Is it safe to install the access control system?
Xidan card: Now the market has a power to open the door or power off the door access control system, if the power in the "open" state, when the fire is conducive to personnel fled the scene, can be extremely unfavorable for the anti-theft. Because if you cut off the power, then the door must open, the burglary will be unimpeded; power in the "closed" state, even if the open power, the lock is still in the closed state, but when a fire, if the power was Interrupted, door lock is closed, the indoor staff can not escape.
Slide the curve after the throttle, correct the direction so that the car as soon as possible and the track parallel.
Security is relative, no absolute
