Upgrade your interior door with a smart handle lock designed for convenient keyless access. The ZSF3 combines a semiconductor fingerprint sensor, integrated keypad, card access, and Tuya / Smart Life app control in an aluminum-alloy body.

Suitable for bedrooms, offices, and other compatible indoor spaces, it offers multiple ways to manage everyday entry.

Five Ways to Unlock

Fingerprint recognition
Access card
Password
Tuya / Smart Life app
Mechanical key

Stores Up to 100 Fingerprints

Register up to 100 fingerprints for family members, staff, and other authorized users. The semiconductor fingerprint sensor allows convenient access without carrying a key or opening your phone.

Tuya & Smart Life App Control

Connect through Bluetooth to access supported lock functions using the Tuya / Smart Life app.

Remote unlocking is optional. Wi-Fi functionality and remote access depend on the selected version and any required compatible gateway.

Temporary Passwords

Temporary password support provides convenient access for guests and other authorized visitors without handing over a physical key.

Passage Mode

Enable Passage Mode to keep the lock unlocked, allowing entry and exit without fingerprint, password, card, or app verification.

To activate this mode, press and hold the interior handle button for approximately five seconds, then release it after the indicator flashes. Repeat the operation to disable Passage Mode.

Battery Power & Emergency Backup

The ZSF3 operates on four AA batteries. If the batteries run out, the USB Type-C emergency power port allows temporary power from a compatible external power source.

Mechanical key access provides an additional backup option. The Type-C port is intended for emergency power.

Tamper Alarm & Multilingual Audio

A built-in tamper alarm provides an alert when tampering is detected. The supplier also lists audio prompts in nine languages to assist with supported lock operations and setup.

Left- & Right-Hand Door Compatibility

Suitable for both left- and right-opening doors. Designed for compatible interior doors made from wood, steel, aluminum, stainless steel, or brass.

Convenient Lock Replacement

Designed to replace compatible existing lever locks without modifying the door holes when the installation dimensions match.

Before ordering, confirm your door thickness, latch backset, and bore-hole dimensions to ensure a suitable fit.

Technical Specifications

Specification	Details
Model	ZSF3
Material	Aluminum alloy
Intended use	Interior doors
Unlocking methods	Fingerprint, card, password, app, mechanical key
Fingerprint sensor	Semiconductor
Fingerprint capacity	Up to 100
Compatible apps	Tuya / Smart Life
Connectivity	Bluetooth; optional remote/Wi-Fi functionality depending on configuration
Power supply	4 × AA batteries
Emergency power	USB Type-C
Passage Mode	Supported
Temporary passwords	Supported
Tamper alarm	Supported
Audio prompts	Nine languages, according to the supplier
Door handing	Left- and right-opening doors
Overall assembly length shown	150 mm / approximately 5.91 in
Rosette diameter shown	73 mm / approximately 2.87 in
Handle width shown	27 mm / approximately 1.06 in

Factory Reset

A recessed reset control is located on the interior handle. The supplier’s instructions indicate holding it with a suitable pin for approximately five seconds to restore factory settings.