1、Support Bluetooth APP to remotely control the switch status of the lock, support fingerprint unlocking, password unlocking, mechanical key unlocking and card unlocking. 2、With a biometric semiconductor fingerprint head with a resolution of up to 150x150, fingerprint recognition is efficient and accurate, and the response time is short. 3、Virtual password design, you can enter the virtual password before and after the valid password, effectively preventing others from peeping. At the same time, you can generate time‑limited passwords to share with your friends. 4、Support mechanical key unlock function, with automatic sleep low power consumption mode, low battery prompt and USB emergency power supply interface for power supply. 5、High‑frequency encryption card, not afraid of degaussing, compact and light, easy to carry. The card can support up to 100 users to share the experience. 6、Remote control plus gateways, compatible with for Amazon and for Google Home intelligent voice control system to realize voice unlocking. (Voice and APP remote control need to purchase a gateways by yourself, the gateways does not include). 7、Zinc alloy surface, and the lock cylinder is made of stainless steel lock body, which is durable. The length of the nut with multiple degrees of fit meets the installation requirements of most scene door designs. Item Type: Smart Lock Material: Zinc Alloy Unlock Method: Fingerprint, password, swiping card, Bluetooth APP Fingerprint Capacity: 200pcs Card Capacity: 100 cards Password Capacity: Unlimited Power Supply: 4 x AA alkaline batteries (not included) Applicable Door Thickness: Approx. 35-55mm/1.4-2.2in Single-Bolt Lock Body Center Distance: Approx. 60mm(2.4in)/70mm(2.8in) (Adjustable) 1 x Front Lock Panel 1 x Rear Lock Panel 2 x Black Rubber Sleeve 2 x Card 1 x Single-Bolt Lock Body 2 x Key 1 x Lock Box 1 x Lock Catch 1 x Installation Accessory Pack 1 x Positioning Paper 1 x Manual