Type:Smart Lock, Fingerprint Door Knob, Keyless Bluetooth Thumbprint Lock, Smart Keyless Entry Door Lock, Fingerprint Door Lock with App Control, Bluetooth Smart Door Lock with Handle Designed to provide protection without disrupting your life. Features: 3 unlocking methods - biometric fingerprint recognition, emergency mechanical key unlocking, and remote unlocking via the TUYA App connected through bluetooth compatible. 3 mode settings: constant open mode, deadlock mode, normal mode, can be switched freely. Our lock is constructed with a front ball aluminum alloy and stainless steel surface parts, ensuring a sturdy structure that prevents unauthorized access. The steel-made anti-theft lock core technology further enhances security. Built-in 400mAh rechargeable lithium battery. The Type-C charging/temporary power interface allows for emergency power supply using a power bank if the battery runs out and you find yourself locked outside. It is suitable for wooden or steel doors with a thickness ranging from 33-55mm. Specifications: Material: Aluminum Alloy, Stainless Steel Battery Specification: 1 x 400ma Lithium Battery Power Supply Method: USB Charging Cable Power Supply ( Power Adaptor Not Included ) Operating Temperature: Minus 5 Degree Celsius - 55 Degree Celsius Number of Keys: 2 Lock Body Model: American Standard Single-Tongue, adjustable three-bar lock body, 60-70mm) Fingerprint Capacity: 20 Emergency Power Supply: Type-C/5V2A Verification Time: Approx. 1.5s Product Size(DxH): Approx. 7.5 x 7.3 cm Package Contents: 1 x Smart Lock 1 x USB Cable 1 x Instruction Manual Please Note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance.