Features:User-friendly interface, easy operation, stable performance, regular work.Stylish, safe and durable, integrated design, convenient to install.EM contactless card, the sensing distance is greater than 20mm.Two open solutions: single card solution and dual card solution.Sound and light indicate when it works, and the blue light will glow gray when the battery is low.It will automatically return and indicate that it is a blocker when there is an obstacle.Widely applicable to swimming pools, sauna bathing places, golf courses, gym lockers, business, schools, hotels, supermarket lockers, etc.Setting Method1.Single card opening: Induce once with management card. When the blue light flashes, induce guest card. After the flashing stops, the guest card can open the door.Note: If a guest card is set up with the management card, the new guest card can open the door, and the previous one's unlocking function is automatically cancelled.2. Double card opening: Continuously induce twice with the management card. When the blue light flashes, induce waiter card. After the flashing stops, the guest card and the waiter card can be used to open the door.Note: To set up multiple waiter cards, you need to set them continuously after the management card raise two "di" beeps.Specifications:Condition: Brand NewMaterial: Zinc alloyColor: Shown as pictureCard Type: ID cardPower Type: 4 * 1.5V alkaline battery (excluded) (with external power supply)Anti-static: > 15000 VCard Reading Time: <0.1 S.Working Humidity: Relative humidity 15%~85%Battery Life: >15 monthsLow-voltage Directives: 4.8 VWorking Temperature: -40~ - 85 degreesStatic Power Consumption: <8 uAEnergy Consumption: <150 MASize: Shown as picturePackage Weight: Approx.247g/8.7ozPackage List:1 * Panel1 * Lock Body1 * Lock Catch1 * Induction Card1 * Installation Screw1 * Opening Hole DrawingNote:1. Accessories of each lock : 1 guest card, 1 external power supply box.2. If the lock doesn't have enough power and fails to open the door, you can power it with the external power box connection panel to open.3. Only use AA alkaline batter, rechargeable battery can not be used.