Features: Simple and Intuitive Display: User-friendly menu design, easy to operate. Multiple Opening Methods: Speed fingerprint opening, password, smart card, make your life safe and convenient. Touch Keyboard: With capacitive touch keypad and LED backlight, it is beautiful and durable, comfortable to operate. Doorbell Function: With doorbell function, no punching, easy to install, no need to punch holes. Anti-peeping: Support garbled unlocking to prevent peeping. For example, you can enter 12352+666666+11245 to open the door while the correct opening password is 666666. Low Energy Consumption: Powered by 4 1.5V alkaline dry batteries, can work continuously for one year. It also features low power protection and low voltage warning function. USB Port: With USB port at the bottom. When the battery is run out, you can use USB power supply to unlock. Specifications: Condition: Brand New Material: ABS Optional Color: Silver, Black Size: Shown as picture Opening Method: Card, fingerprint, password Sensor: Optical semiconductor FAR: <0.001% Fingerprint Unlock Time: <0.5S Capacity: 300 fingerprints Emergency Power Supply: Support Door Thickness Requirement: 8-25MM Power Supply: AA battery * 4 (not included) Alarm Voltage: <4.5V Fingerprint Sensor Type: Optical sensor Static Current: <30UA Working temperature -25°C ~ +65°C Emergency Interface: USB (interface voltage DC 5V) Package List: 1 * Glass Door Lock 2 * Installation Backplate 2 * Back Adehesive 1 * Screw Bag 2 * Epoxy Card 1 * User Manual 1、Simple and Intuitive Display: User-friendly menu design, easy to operate. 2、Multiple Opening Methods: Speed fingerprint opening, password, smart card, make your life safe and convenient. 3、Touch Keyboard: With capacitive touch keypad and LED backlight, it is beautiful and durable, comfortable to operate. 4、Doorbell Function: With doorbell function, no punching, easy to install, no need to punch holes. 5、Anti-peeping: Support garbled unlocking to prevent peeping. For example, you can enter 12352+666666+11245 to open the door while the correct opening password is 666666.