1. management card: the first card is the management card, which has the functions of setting and deleting.
2. Open the door with a single card: use the management card to sense 1 time, and the guest card will sense it when the blue light flashes. After the flashing stops, the guest card can open the door.
3. Double-card door opening: use the management card to sense it twice in a row, and the waiter card will sense it when the blue light flashes. After the flashing stops, you can use the guest card and the waiter card to open the door.
4. Master card: Use the management card to continuously sense the master card for 4 times. When the blue light flashes, the main card can be sensed. When the blue light stops flashing, the main card can open the door. 5. Clear all setting information: After five consecutive induction with the management card, the ticking sounds long and the blue light flashes twice, and all setting unlocking information is cleared.