Item Type: Smart Lock Material: Zinc Alloy + ABS Power Supply Mode: 4 x AAA alkaline batteries (not included) Card Frequency: 125KHZ ID card Quiescent Current: ≤30μA Dynamic Current: ≤350mA Undervoltage Alarm Point: 3.3±0.2V Lock Bolts Length: Approx. 14mm/0.6in Working Temperature: -20℃-+55℃ 1、4?level management, this lock can be equipped with 3 master cards, 1 management card, 20 waiter cards and 1 guest card. 2、With a small lock bolt, which has anti?pry alarm function, high safety. When the power of the lock is insufficient, it can be unlocked by connecting the panel and external power supply box. 3、The first card of induction is the management card, which has the function of setting and deleting, and it can used to unlock directly. (The management card has been set up at the factory). 4、Single card to unlock: use the management card to sense once, and sense the guest card when the blue light flashes, after the flashing stops, the guest card can open the door (Note: If the management card is set a guest card again, the new guest card can open the door, and the previous card automatically cancels the door opening function.) 5、Dual card to unlock: use the management card to sense twice, and sense the waiter card when the blue light flashes, after the flashing stops, the door can be opened with the guest card and the waiter card. (Note: If need to set up multiple waiter cards, you need to set them continuously after the management card is sensed for 2 times.) 6、Use the management card to sense 4 times in a row to set a master card. sense the master card when the blue light flashes, after the blue light stops flashing, the master card can open the door (Note: Set according to customer needs). 7、After the management card is used for 5 consecutive inductions, there will be 2 long beeps and the blue light will flash 2 times, and all the unlocking information that has been set will be cleared. (Note: Only the management card function is reserved.) 8、Use the initialization button to clear all information, switch for 2 seconds, the blue light flashes with a beep, and all information is cleared after the light is off. (After clearing, you can reset it according to the first step for using). 1 x Lock Body 1 x Lock Box 1 x Lock Catch 1 x ID Card Tag 1 x Installation Screw Pack 1 x Instruction