Product Introduction
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.
