[360Fingerprint Identification] lever lock possesses a more sensitive fingerprint reader, which can recognize your fingerprint in just 0.3 seconds and unlock your 1 second. It's faster than groping for the key. Great smart devices for home, hotel, apartment and office [EMERGENCY CHARGING] The keyboard door handle needs 4 AAA batteries (Not included), it has a low battery alarm function and comes with a USB port for emergency charging. User-friendly and Multifunction: Easy to add or delete users in seconds. All Settings can be easily operated on the administrator's app, include adding , voice interaction, custom passcode, unlock records tracking, passage/user mode, auto lock delay time, etc. Advanced: Using the latest version of the biometric fingerprint sensor on the fingerprint lock, 0.1s scanning time, and instant unlock. With the LED Touch Keypad, you can enter codes even in darkness. Easy to Install: No wiring, no drilling and save cost of the locksmith, you can easily install the keypad lock by yourself with just one screwdriver. Suitable door thickness:35-50MM (if the door thickness exceeds the above range, please note the specific door thickness to adapt to the appropriate screw accessories). Unlocking methods: fingerprint unlocking and mechanical key unlocking, number of fingerprint groups: 30 groups. The mechanical key must be properly outside the door. Other functions: normally open mode selection (in normally open mode, the door lock is always open) Buzzer sound prompts, indicating light navigation Model:GM3-DZ Operation setting : (1) Enter the settings by long pressing the fingerprint head, and follow the light and sound prompts to enter the user, normally open mode, and restore the factory settings. See the instructions or setup video for details. (2) The rear setting button inthe battery compartment has the functions of normally open mode selection and factory reset. Short press once: Turn on the always-on mode. Short press again: turn off the always-on mode. Press and hold for about 8 seconds until the indicator light flashes red and release: Restore factory settings. (3) In the normally open mode, the administrator's fingerprint can also be used to turn off the normally open mode by pressing the fingerprint head. The battery compartment cover adopts magnetic suction and can be removed by gently pressing from the bottom. Emergency power supply: USB charging port (Type C). When the battery is out of power, a power bank can be used to temporarily charge and unlock the USB charging port. Surface treatment: powder spraying Standard lock body:60-70MM adjustable lock body Power Suplly:4 x AAA batteries(Not included batteries) Colour:Black Material:Aluminum alloy Size:Cover diameter:70mm, Handle size:150mmx28mm Package Contents: 1 * Front panel 1 * Rear panel 1 * Latch 2 * Mechanical Key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.