1、Four management methods: main card, main control card, waiter card, guest card. 2、Mother card: Only one card in the same system, for configuring various door cards. 3、Manager card: Can open all the locks in the system. 4、Guest card: open a door lock set only. 5、Waiter card: Can open all the door locks in the service area. Features: Four management methods: main card, main control card, waiter card, guest card. Mother card: Only one card in the same system,  for configuring various door cards. Manager card: Can open all the locks in the system. Guest card: open a door lock set only. Waiter card: Can open all the door locks in the service area. Available two modes: With a set of locks, the user can choose between the attendant card and the guest card, and the guest card combination lock of the individual lock or service card. Suitable for Sauna center, Villa of leisure, recreation centers, dormitories, etc. Specifications: Material: metal Color: gold, silver (optional) Induction Type: W-Shaped Bracelet Card, Silicone Bracelet Card, Button Card (optional) Working Power: DC6V, 4 AA batteries (Battery not included) Quiescent Current: <10 microamps (μA) Dynamic Current: <150 milliamps (mA) Battery Life: 20000 in normal door ,  200 in low pressure prompt to open the door Bolt Length: 15mm/0.6in Applicable to Door Thickness: 15~30mm Operating Temperature: -20 ° C ~ + 55 ° C Size: 123*53*10mm/4.8*2.1*0.4in (Length*Width*Height) Scope of Application: Sauna center, Villa of leisure, recreation centers, schools, dormitories, laboratories needing to effectively control the crowd and out of place Package List: 1 * Sensor Head 1 * Lock Body 1 * Lock Catch 1 * Screw Package 1 * Button Card 1 * Emergency USB