What does it mean that the door card system is locked?

The door card system lock means that the system has automatically locked the door card if the door card has been entered incorrectly multiple times. This locking is to prevent others from stealing the door card and committing illegal acts. Under normal circumstances, the system will automatically restore the access rights of the door card after a few minutes after locking. If the door card is locked, you can wait for a period of time and try again, or contact the relevant personnel to inquire about the solution.