Biometric Smart Door Lock – Fingerprint, App & Keypad | ATUOTIN

ATUOTIN Biometric Fingerprint Smart Door Lock with TTLOCK App Control

Upgrade your home's entry with the ATUOTIN Intelligent Door Lock — a sleek, zinc alloy smart lock that combines five flexible access methods with robust construction and Bluetooth app control. Compatible with glass and wooden doors 3.5–6.5 cm thick, this lock delivers modern convenience without sacrificing security. Made in Mainland China.

5 Ways to Unlock — Your Choice, Every Time

• Fingerprint Recognition: Semiconductor sensor stores up to 50 fingerprints with a false admission rate below 0.001% and unlocks in ~1.5 seconds.
• Digital Password: Supports up to 150 custom & permanent passwords plus 150 dynamic one-time codes.
• IC Card Access: Includes 2 IC cards for quick tap-to-open entry.
• Mechanical Backup Keys: 2 physical keys included for fail-safe access at all times.
• TTLOCK App (Bluetooth): Manage users, permissions, and access records remotely from your smartphone.

Smart App Control with TTLOCK

The free TTLOCK APP (compatible with Android 4.3+ and iOS 7.0+) lets you add or remove users, set password validity periods, share temporary access codes with guests, and review door open/close history — all from your phone via Bluetooth 4.1 BLE. No internet connection required to share access.

Anti-Peep Keypad Design

The touch-sensitive capacitive keypad features an anti-peep mode — simply enter random digits before and after your real password to prevent onlookers from guessing your code. The keypad illuminates automatically for easy nighttime use.

"Always Open" Convenience Mode

With a 1-second press of the handle button, switch to Always Open mode — perfect for parties, moving day, or frequent foot traffic. Switch back to secure mode just as easily.

Type-C Emergency Charging — Never Get Locked Out

Running low on battery? The built-in USB-C emergency charging port lets you temporarily power the lock with any portable power bank, so you're never stranded. The lock also provides a low-voltage alarm at 4.8V before battery depletion.

Durable Zinc Alloy Construction

The C-level lock cylinder and zinc alloy lockhead resist tampering and forced entry attempts. The reversible handle works for both left- and right-handed door configurations. Its detached handle design protects internal components from physical damage.

Key Specifications

• Brand: ATUOTIN
• Material: Zinc Alloy
• Colors: Black, Silver
• Connectivity: Bluetooth 4.1 BLE
• Fingerprint Capacity: 50
• Password Capacity: 150 custom + 150 dynamic
• Power Supply: 4x AA Alkaline Dry Cell Batteries (not included) + USB-C Emergency Charging
• Standby Current: 65 µA | Working Current: <200 mA
• Voltage Range: 4.5–9V
• Door Thickness: 3.5–6.5 cm
• Lock Cylinder: 25mm × 60–70mm (adjustable), C-level
• Dimensions: ~160 × 65 × 28 mm
• Weight: 800 g
• Operating Temperature: -20°C to 70°C
• Suitable Doors: Wooden, Glass
• Certification: CE
• Origin: Made in Mainland China

What's in the Box

• 1 × Intelligent Door Lock Body
• 1 × Installation Kit
• 2 × Mechanical Keys
• 2 × IC Cards
• 1 × English Instruction Manual

For more information on smart home device security standards, visit the NIST Cybersecurity Resource Center.

Frequently Asked Questions

Q: What door types is this biometric smart door lock compatible with?

A: This ATUOTIN fingerprint smart lock is designed for wooden doors and glass doors with a thickness of 3.5–6.5 cm. The lock cylinder is adjustable (25mm × 60–70mm) to accommodate various door configurations.

Q: Does the TTLOCK app require Wi-Fi or an internet connection?

A: No — the TTLOCK app connects to the lock via Bluetooth 4.1 BLE, so you can manage users and access settings without a Wi-Fi or internet connection. For remote access from outside Bluetooth range, an optional gateway device (sold separately) can be added.

Q: What happens if the battery dies — can I still open the lock?

A: Yes. The lock includes two physical mechanical backup keys for emergency access at any time. Additionally, the built-in USB-C port allows you to connect a portable power bank to temporarily power the lock and unlock it electronically, so you'll never be stranded outside.

Q: How secure is the anti-peep password feature?

A: The anti-peep design allows you to type any random digits before and after your actual password. The lock only reads the correct sequence within the entered string, making it virtually impossible for bystanders to identify your true code from observation.