Smart Door Knob, 99444

Price: $37.99
(as of Jan 28, 2026 23:12:07 UTC – Details)


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Multi-function unlocking: 1. The smart door lock can store up to 20 different fingerprints. With advanced fingerprint recognition technology, unlocking only takes 1 second. 2. APP Bluetooth control, open the door with one click and open the door remotely (note: remote unlocking is required by connecting to the gateway). You can manage users, share electronic keys and view access logs to track your home security. 3. Mechanical spare key unlocking.
Tri-Mode Interior Door Features: On the reverse side is a classic mechanical door lock. You can switch modes by rotating the button on the inner knob with your thumb, and it will automatically lock in 4 seconds after unlocking. Normal mode: All authorized fingerprints and mechanical keys can be unlocked and entered normally. Passage mode: Turn the door handle normally to enter or exit without unlocking. Anti-lock mode: Administrator’s permission fingerprint and mechanical key can enter, anti-lock function protects privacy, and it is safer to switch at will.
Built-in rechargeable battery: The built-in battery is: 400mAh aluminum battery, 3.7V power supply. The smart door handle has a long battery life. It can be fully charged in 3 hours and can be used continuously for up to 8 months. It has a low voltage alarm function and a Type-C emergency power supply or charging interface (when the product voltage is low, it can be temporarily unlocked or charged with a charger or power bank).
Easy to install: The fingerprint door lock comes with all necessary hardware and is easy to install in about 15 minutes using a screwdriver according to the instructions. Suitable for wooden or steel doors with door thickness 33-55mm. Suitable for residential areas, apartments, office buildings, office buildings, etc. (Note: Front lock installation: The front lock rivet must pass through the round hole with a center distance of 41 on the lock tongue. If installed in other directions, the lock cannot be opened.)
Technical parameters: Number of fingerprints collected and stored: 20 (fingerprint pixels: 140*96, fingerprint resolution: 508dpi). Prompt sound: Buzzer prompts navigation. Product size: φ75mm *73mm. Door lock net weight: 0.68KG. Power interface type: Type-C/5V 2A. Low battery alarm voltage. Voltage range: lithium battery 3.4↔4.2V. Standby current: <90ua. Operating current: <500mA. Unlocking time≈1.5 seconds. (Note: Battery life may vary depending on how often the lock is used and is not removable and cannot be replaced)