---
product_id: 734492635
title: "HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels"
brand: "hei liang"
price: "€ 153.12"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/734492635-hei-liang-smart-door-knob-fingerprint-door-lock-smart-lock
store_origin: PT
region: Portugal
---

# App control & monitoring 3 unlocking modes Biometric fingerprint sensor HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels

**Brand:** hei liang
**Price:** € 153.12
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock the future of home security with a touch and a tap!

## Quick Answers

- **What is this?** HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels by hei liang
- **How much does it cost?** € 153.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/734492635-hei-liang-smart-door-knob-fingerprint-door-lock-smart-lock)

## Best For

- hei liang enthusiasts

## Why This Product

- Trusted hei liang brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Triple Unlock Power:** Fingerprint, app, or emergency key—choose your secure entry style.
- • **DIY Friendly Installation:** Fits most American doors; install in minutes with just a screwdriver.
- • **Classic Meets Cutting-Edge:** Sleek zinc and stainless steel design blends timeless style with modern tech.
- • **Always Powered, Always Ready:** Visual power display and low battery alerts keep you worry-free.
- • **Smart Security at Your Fingertips:** Real-time access logs and remote control via intuitive app.

## Overview

The HEI LIANG Smart Door Knob is a biometric fingerprint lock featuring three unlocking methods—fingerprint, app control, and emergency key—designed for bedrooms, offices, and apartments. Crafted from durable zinc and stainless steel, it offers easy installation on standard American doors (30-55mm thickness). The integrated app provides real-time access management and security monitoring, while visual power indicators ensure uninterrupted operation.

## Description

Fingerprint Door Lock

## Features

- 【3 ways to unlock】The smart door handle has 3 unlocking methods for you to choose from: fingerprint unlocking-convenient, app control unlocking-safe, emergency spare key-reliable, more convenient to enter and exit
- 【Simple, smart, safe】The door lock has biometric recognition function and supports App control, which can easily realize fingerprint management. You can view unlocking records, automatic locks, traffic modes and security locks through the App, which can prevent people you don't welcome from entering your room to control your home security.
- 【Classic design but more solid】The door handle continues the classic style design, equipped with fingerprint lock function and modern app control (for details, please refer to the instruction manual), which is a very ideal fingerprint door handle smart lock for bedroom doors, offices, apartments, and hotels.
- 【Easy to install】The fingerprint door handle door lock can be easily installed with a screwdriver in just a few minutes, suitable for most American doors, Tips: When installing the inner knob, the outer and inner knobs must be inserted according to the "UP" sign on the top so that they can be fixed in place. The spindle rod is in a vertical position. Turn the adjustment arrow with your thumb to point to the center point and the "UP" symbol, and then insert the arrow upward into the mounting base. You can fully insert the back lock with a little force. Easily replace existing door locks.
- 【Note】Smart door locks are suitable for wooden doors, fire doors, anti-theft doors, etc. between 30-55mm. The door lock also has a visual power display and low power alarm function. Please remember to separate after charging, do not plug in for use, and the battery is not removable. If you have any other questions, please feel free to consult us!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | HEI LIANG |
| Part Number | SQ-1 |
| Product Dimensions | 23.6 x 7.59 x 7.59 cm; 675.85 g |
| Batteries | 1 AAAA batteries required. |
| Item model number | HL-1 |
| Size | 2.99*3.22 |
| Colour | Black |
| Style | Smart Door Knob |
| Finish | Polished |
| Material | Zinc |
| Shape | Round |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Handle material | Stainless Steel |
| Special Features | Easy to Install |
| Usage | Door |
| Included Components | Lock And Key |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Lithium Ion |
| Item Weight | 676 g |

## Product Details

- **Brand:** HEI LIANG
- **Special feature:** Easy to Install
- **Lock type:** Biometric
- **Item dimensions L x W x H:** 23.6 x 7.6 x 7.6 centimetres
- **Material:** Zinc

## Images

![HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels - Image 1](https://m.media-amazon.com/images/I/61RtVvUpcPL.jpg)
![HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels - Image 2](https://m.media-amazon.com/images/I/71zZ5-tkxgL.jpg)
![HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels - Image 3](https://m.media-amazon.com/images/I/711sXN-w-+L.jpg)
![HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels - Image 4](https://m.media-amazon.com/images/I/71mvZGTOfmL.jpg)
![HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control, Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels - Image 5](https://m.media-amazon.com/images/I/71YLStcRTFL.jpg)

## Available Options

This product comes in different **Colour Name** options.

## Questions & Answers

**Q: What are the fingerprint unlocking functions of this product?**
A: The unlocking function includes: fingerprint unlocking, passwordunlocking, key unlocking, and Bluetooth APP unlocking

**Q: What type of door is suitable for?**
A: Applicable for wooden or steel doors with a thickness of 35-55mm

**Q: Where does it apply?**
A: Suitable for residential regions , apartments , offices , office buildings ,etc

**Q: Can I charge it and use it?**
A: It cannot be used for charging all the time, and the socket is only used for emergency charging and opening the door when the battery is dead.

**Q: What warning will be issued when the battery voltage drops to low?**
A: The buzzer sounds once, and the reader flashes green and red; The mobile app will receive a notification message that the battery is low.

## Frequently Bought Together

- HEI LIANG Smart Door Knob, Fingerprint Door Lock Smart Lock Biometric Door Lock Fingerprint Door knob with App Control Suitable for Bedroom,Cloakroom,Apartments Offices,Hotels(Black)
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**Shop now:** [https://www.desertcart.pt/products/734492635-hei-liang-smart-door-knob-fingerprint-door-lock-smart-lock](https://www.desertcart.pt/products/734492635-hei-liang-smart-door-knob-fingerprint-door-lock-smart-lock)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-27*