B1 Single Handle Smart Lock | Fingerprint Room Door Lock

Original source material for reference. General service terms and version-dependent claims require confirmation for your order.

• 4-in-1 Seamless Access: Effortlessly unlock your door using Biometric Fingerprint, Password, Mechanical Key, or optional smart App control (Tuya Bluetooth / TTLock Bluetooth).
• One-Touch Fingerprint Unlock: Equipped with a responsive semiconductor fingerprint sensor embedded right into the handle for natural, single-handed opening.
• Universal Adjustable Latch: Comes with a 60/70mm adjustable single-bolt lock body, making it incredibly easy to retrofit onto standard wooden doors (35-55mm thickness).
• Durable Construction: Crafted from high-quality Aluminum Alloy, providing a sturdy build with a refined finish in either Black or Silver.
• Ample Storage Capacity: Safely stores up to 50 fingerprints and 100 customized passwords, perfect for families and small offices.
• Smart Power Backup: Powered by 4 AAA batteries and includes a modern Type-C USB interface for reliable emergency charging.

The Leondarx B1 Single Handle Smart Lock delivers a sleek, minimalist security solution for indoor spaces. Exclusively designed for interior wooden doors, it combines stylish aluminum alloy construction with convenient keyless access. The integrated semiconductor fingerprint sensor supports one-touch unlocking, while multiple access methods including passwords and mechanical keys ensure flexible usage. With an adjustable 60/70 mm lock body, it fits standard door thicknesses from 35 to 55 mm.

Users can optionally connect via Tuya or TTLock Bluetooth App for smarter control. Powered by 4 AAA batteries, the lock supports a large capacity of 50 fingerprints and 100 passcodes, meeting daily household and office demands. It also features a Type‑C emergency power supply for reliable backup. Boasting a compact round design and strong adaptability in a wide temperature range from −25 °C to 70 °C, the B1 is an ideal choice for bedrooms, home offices and other private interior areas.

After-sales Service The product comes with a 2-year product warranty , plus 10-year technical support.

Minimum Order Quantity For standard products: MOQ is 50~80 units. For OEM/ODM customized orders: MOQ shall be calculated separately.

Quality Control System (Smart Lock Version)

SQA

Supplier factory audit

Component quality verification (lock body, PCB, fingerprint sensor)

IQC

Incoming material inspection

Functional test for electronic modules

RoHS & appearance check

PQC

Semi-finished assembly inspection

Motor drive & fingerprint recognition test

Power-on test and video/facial module verification

FQC

48-hour aging and full-function testing

Lock body endurance test, door thickness simulation test

Smart Lock – General Q&A

Ⅰ. Cooperation & Delivery：

Q1. Are you a factory or a trading company?

A: We are a direct manufacturer with complete production lines and an in-house R&D team, supporting OEM / ODM customization and bulk orders.

Q2. What is the delivery time?

A: Standard models take around 3-5 working days; customized models take about 15–40 days depending on functions and quantity.

Q3. What is the packaging and shipping method?

A: Standard orders use universal packaging boxes. For quantities over 2,000 units, custom color boxes are available. Products are shipped by express or sea freight depending on order size.

Ⅱ. Battery & Power：

Q1. How long does one set of batteries last?

A: Under normal use (5–10 openings per day), the batteries can last around 6–12 months.

Q2. What if the smart lock runs out of power?

A: You can use an emergency power supply, such as a power bank (Type-C or 9V battery), to temporarily power the lock and unlock it.

Q3. Does the smart lock support rechargeable batteries?

A: Yes, but we recommend using reliable branded batteries to avoid overcharging or deep discharge.

Ⅲ. Warranty & Support：

Q1. What is the warranty period for smart locks?

A: All models come with a one-year warranty.

Q2. How do you handle after-sales service for overseas customers?

A: For every 1,000 smart locks ordered, we include one set of key spare parts for replacement use.

Q3. Do you provide installation guidance?

A: Yes, we provide detailed installation videos and online technical support.

Ⅳ. Durability & Stability：

Q1. What is the lifespan of the fingerprint sensor?

A: The fingerprint sensor can handle more than 200,000 recognition cycles.

Q2. What is the lifespan of the motor and lock body?

A: The mechanical lock body can endure over 100,000 opening and closing cycles.

Q3. Are smart locks waterproof?

A: Outdoor models have an IP55 waterproof rating, capable of withstanding light rain.

Ⅴ. Features & Operation：

Q1. How many fingerprints can be stored?

A: Most models can store between 100–250 fingerprints.

Q2. Does it support temporary passwords?

A: Yes, most models support one-time passwords that can be set remotely through the APP or management platform.

Q3. Can the lock be controlled remotely?

A: Yes, remote unlocking via WiFi / APP / gateway is supported depending on the model.

Q4. What unlocking methods are available?

A: Fingerprint, password, IC card, mechanical key, APP, and temporary password.

Q5. Can the lock connect to smart home systems?

A: Yes, it supports integration with platforms such as Tuya, TTLock, and PLC systems.

Ⅵ. Customization & Design：

Q1. Can I customize my own logo?

A: Yes, logo customization is available with a minimum order quantity of 500 sets.

Q2. Can I customize the appearance or color?

A: Yes, both panel color, material, and packaging can be customized.

Q3. Do you support APP customization?

A: Yes, OEM APP and branded interface customization are available, based on company specifications.

Ⅶ. Quality & Warranty：

All products comply with the 7S Quality Management System and come with a one-year warranty and video installation guidance service.

All products comply with the 7S quality management system and come with a one-year warranty and installation support.