HEI LIANG Fingerprint Door Lock – Smart Biometric Keyless Entry HL-3 Matte Black

A smart door lock built for real life

HEI LIANG HL-3 blends a timeless door hardware silhouette with modern biometric security. The matte black finish adds a refined touch to private spaces like bedrooms and offices, while the internal electronics safeguard access without sacrificing privacy. This smart door knob supports multiple unlocking methods and app-based control, aiming to make daily entry smoother and more secure in homes, small offices, hotels, and apartments.

Four unlocking methods for flexible access

• Fingerprint unlocking with fast 0.3-second recognition for hands-free entry when carrying bags or shopping.
• Password unlocking via keypad for shared spaces or temporary guests.
• App control unlocking to manage access remotely and adjust settings from a smartphone.
• Emergency spare key as a trusted offline backup option.

Having several options reduces the need to search for keys and offers convenient fallbacks when hands are full or lighting is low.

Smart management and security through the app

• Unlocking records and fingerprint/password management accessible from the app for transparency and control.
• Automatic locking, customizable access modes, and built-in security controls to tailor access for guests, staff, or family.
• Remote control capabilities and a centralized overview help you monitor entry activity from anywhere.

The app-centered approach helps you balance ease of use with privacy, giving you a practical overview of who accessed your space and when while keeping keyless entry convenient.

Design, privacy, and versatility

The HL-3 combines a classic door-hardware aesthetic with modern biometric and digital features, making it suitable for private rooms, home offices, hotel rooms, and rental properties. Its understated matte black finish complements a variety of interiors while delivering practical access control that respects space privacy and everyday routines.

Installation, compatibility, and practical tips

Designed for wooden doors and common installations, the lock fits door thicknesses from 30 to 55 mm and can be mounted with a screwdriver in minutes. When assembling the inner and outer components, follow the UP indicator to align the spindle, and ensure the back lock seats securely against the mounting base. In low battery situations, a power bank can provide emergency power to open the door. For any questions, our support team is ready to help.