Expert answer:
Hello, FC-898E Machine has several way to add and delete cards.
1. Add cards one type:(4 + * + 1 + # + CARD READER),swipe card to the machine.If succeed,buzzer will blew once.read the admin card to swipe cards in turns
2. Add cards two type:(4 + * + 2 + # + CARD READER),swipe card to the machine.If succeed,buzzer will blew once.read the admin card to swipe cards in turns
3. Add cards third type:(4 + * + 3 + # + CARD READER),swipe card to the machine.If succeed,buzzer will blew once.read the admin card to swipe cards in turns
4. Add cards fourth type:(4 + * + 4 + # + CARD READER),swipe card to the machine.If succeed,buzzer will blew once.read the admin card to swipe cards in turns
5. Delete one open door card:(5 + * card number # ) card number is the ten number on the card.
6. Delete all open door cards:(5 + * + 9 + * + 9 + #) delete successfully will buzzer once.
7. Delete one type cards data:(6 + * + type + #) four type number,EG:6 * 1 delete one type cards data.
NOTE: you need to sign in the management mode when add and delete cards.