Access control system after the card is still not open what is the reason?
Perhaps the door card was demagnetized.
Halo yo, sample, no authority, you open a wool
Switch can open the door normally, if the switch is connected to the card above the card, then the switch can open the door that is the problem of card permissions, and if the switch is connected to the power supply above the door can open the door, then you need to check the card under the line , There is no problem with the basic line to determine your card is a problem
