M4 Smart Fingerprint Induction Lock with 30-Group Capacity and 0.5s Recognition

This smart fingerprint lock replaces traditional key-only entry with a faster, more flexible solution for homes and small offices. Using a semiconductor acquisition module, the lock reads fingerprints accurately in a wide range of temperatures from -20° to 55° Celsius, making it suitable for both internal and sheltered external doors. The zinc alloy housing and black finish blend with modern door furniture while providing reliable physical security. With a recognition speed of just 0.5 seconds and a 30-group fingerprint memory, you can manage access for family members, guests, or colleagues without handing out physical keys.

Features and Construction

The lock is built around a precise semiconductor fingerprint sensor and a durable zinc alloy body, offering a balance of speed and security for everyday use.

Material and Build

The lock body is made from zinc alloy, a material chosen for its strength and resistance to corrosion in indoor environments. The compact 145 x 65 mm footprint fits most standard door designs, and the black colour keeps the lock discreet against dark or neutral door finishes. The key override adds a reliable fallback if batteries run low.

Size and Practical Fit

Measuring 145 by 65 mm, this lock is designed for standard door thicknesses and edge bores. The compact size means it does not protrude excessively, maintaining a neat appearance on both internal and external doors. Installation requires basic DIY skills and the supplied hardware.

Uses and Placement

This lock suits a range of residential and light-commercial settings where quick, keyless entry is needed.

Home Security Use

Use it on front doors, back doors, or garage access points to eliminate the need for carrying keys. The 30-group capacity means you can enrol fingerprints for the whole household, including children and elderly relatives, without complicated codes.

Small Office or Rental Property

For landlords or small office managers, the lock allows you to assign and revoke fingerprint access for tenants or staff easily. No physical key cutting or digital code sharing is required, saving time and reducing security risks.

Benefits and Buying Value

This lock delivers practical advantages for everyday use without relying on complex smart home ecosystems.

Low Maintenance and Battery Life

The lock runs on four standard AAA batteries (1.5 V each). When the battery level drops, a warning indicator alerts you, and the key override ensures access until batteries are replaced. No special charging cables or subscriptions are needed.

Why Choose This Product

It combines a solid zinc alloy build with a fast semiconductor sensor and 30-user capacity at a price point that suits budget-conscious homeowners. The straightforward fingerprint-plus-key design avoids the potential issues of Wi-Fi or app failures, making it a reliable choice for those who want basic smart lock features without unnecessary complexity.