Secure Keypad Entry & Remote Access Control – Top-Rated Smart Lock System for Apartments & Rental Propertiess
BSL-S3 | Best-Selling Smart Fingerprint Door Handle Lock with TTLock App Control Integration
"The BSL-S3 is a professional-grade smart fingerprint door handle lock designed for seamless security in modern apartments and bedrooms. As a best selling smart lock system, the S3 model features advanced TTLock App Control , robust keypad entry, and a secure latch design tailored for the rental market. Built for reliability, it supports OEM/ODM customization with factory-direct pricing."
BSL-S3 是一款专业级智能指纹门锁，专为现代公寓和卧室打造，提供无缝安全保障。作为畅销的智能锁系统，S3 型号配备先进的 TTLock App 控制、坚固耐用的键盘输入以及专为租赁市场量身定制的安全锁舌设计。该产品以可靠性著称，支持 OEM/ODM 定制，并提供工厂直销价格。
Check out the technical specifications of our best selling smart lock system BSL-S3.
“Looking for a reliable partner? As a leading provider of the best selling smart lock system, KMAN SMART offers competitive factory pricing and professional OEM/ODM services for the BSL-S3 model. Secure your bulk order today for fast global shipping.”
BSL-S3 | Technical Specifications & High-Performance TTLock System
“The BSL-S3 is a premier choice in our best selling smart lock system lineup, specifically engineered for professional-grade security. This model integrates seamlessly with the TTLock App via Bluetooth, offering a robust suite of management tools including biometric identification, anti-peep keypad codes, and a reliable emergency Type-C power backup. Designed for modern apartments, bedrooms, and office doors, it ensures a stable and secure access solution for high-frequency rental projects.”
"Partner with a leading provider of the best selling smart lock system. KMAN SMART offers competitive factory pricing and professional OEM/ODM services for the BSL-S3 model. Secure your bulk order today for fast global shipping."
✓ Factory Direct Pricing for Maximum Margins
✓ OEM & Custom Branding Available (Logo/Packaging)
✓ Fast Global Delivery for Bulk Orders
✓ Stable Quality Control for Long-Term Projects
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Tell us your requirements and get fast response on pricing, specifications and OEM solutions.
Smart TTLock App Control App Integration
Manage your doorstep from anywhere. The BSL-S3 best selling smart lock system allows you to generate temporary codes, check real-time access logs, and unlock remotely via the TTLock App ControlSmart or Smart Life app. Perfect for managing rental guests and service providers.
Expert Consultation
Contact our team for customized smart lock solutions tailored to your project.
Advanced Fingerprint Recognition
Equipped with a high-precision semiconductor fingerprint sensor, the S3 offers 360-degree recognition in less than 0.5 seconds. Experience a keyless lifestyle with industry-leading security that prevents “fake fingerprint” entry.
Sample Request
Order a BSL-S3 sample to test our high-precision fingerprint technology
Universal Latch & Easy Retrofit
Designed for a hassle-free setup. The S3 features an adjustable 60/70mm single latch, making it compatible with most standard apartment and bedroom doors. No drilling or professional wiring required for a quick DIY installation.
Project Support
Full technical support for installation and Tuya App integration
Why is the BSL-S3 considered the best selling smart lock system in 2026?
The BSL-S3 stands out as the best selling smart lock system due to its perfect balance of security, TTLock App integration, and factory-direct affordability. Engineered for modern apartments and rental properties, it offers military-grade encryption, seamless app remote control, and high-precision fingerprint recognition, ensuring a premium user experience at a competitive wholesale price..
What are the core technical specifications and installation requirements for
The S3 smart fingerprint door handle lock features a universal latch design with an adjustable 60/70mm backset, making it a perfect retrofit for standard bedroom and apartment doors. It supports TTLock / Smart Life App via Bluetooth (or Gateway for remote access). Key specs include a semiconductor fingerprint sensor (<0.5s recognition), 50+ fingerprint capacity, and emergency USB-C power backup, designed for doors with a thickness of 35-55mm..
How to buy the BSL-S3 smart lock system in bulk for OEM/ODM projects?
As a leading smart lock manufacturer, we provide comprehensive OEM/ODM services for the BSL-S3 model. This best selling smart lock system is available for bulk supply with customized branding, packaging, and software integration options. We offer factory-direct pricing and global shipping to support distributors, real estate developers, and smart home project buyers in scaling their business quickly.
BSL-S3 | Industry-Leading Technical Specifications
Engineered for high-traffic environments, the BSL-S3 offers a perfect balance of security, durability, and smart management. Designed to meet international installation standards, it is the premier choice for modern apartment projects and professional property management.
- Core Specifications of BSL-S3 Best Selling Smart Lock System
- Model BSL-S3 (2026 Best Selling Series)
- Brand KMAN SMART
- Unlocking Methods Fingerprint, Anti-peep Keypad, TTLock App, Mechanical Key
- Material High-density Zinc Alloy with Anti-scratch Coating
- Fingerprint Sensor Semiconductor Biometric (<0.5s recognition)
- Power Supply 4 x AAA Batteries (approx. 12 months standby)
- Emergency Power Type-C USB Port (Critical for Rental Units)
- Door Thickness: Fits standard doors from 35mm to 55mm.
- Adjustable Latch: Supports both 60mm and 70mm backsets (Single Latch).
- Direction: Universal handle (Left/Right reversible).
- Retrofit Friendly: No drilling required for most standard bedroom doors.
Is the BSL-S3 compatible with my existing door?
> “Yes, the BSL-S3 best selling smart lock system is designed as a direct replacement for traditional lever handles. It is highly recommended for apartment management, Airbnb hosts, and office security due to its easy setup and reliable TTLock App integration.”
Why Distributors & Apartment Projects Choose the BSL-S3 Smart Lock System
Factory-Direct Wholesale Pricing
> “As a direct manufacturer, we provide the best selling smart lock system at competitive factory prices, helping you maximize profit margins and maintain a competitive edge in the smart home security market.”
Enterprise-Grade Reliability
> “The BSL-S3 is engineered for high-frequency use in rental apartments. With strict quality control and a semiconductor fingerprint sensor, it ensures fewer after-sales issues and higher customer satisfaction for your projects.”
2026 Best-Selling Series
> “Based on the success of our S3 series, the S3 is our latest best selling smart lock system, already trusted by international distributors and tested in diverse global markets for fast sales acceleration.”
“Trusted by global distributors, large-scale apartment projects, and professional OEM partners as their reliable smart lock supplier.”
BSL-S3 | High-Demand Best Selling Smart Lock System for Apartments
Cost-effective smart door lock designed for apartments, bedrooms, and rental projects. Ideal for bulk orders and OEM customization.
BSL-S3 | High-Performance Best Selling Smart Lock System for Apartments
mart App Control & Remote Management (TTLock Edition)
With TTLock App integration, the BSL-S3 allows for seamless remote unlocking, eKey sharing, and temporary passcode management directly from your smartphone via Bluetooth or G2 Gateway.
Engineered for Airbnb hosts and property managers, it supports centralized management for multiple locks, allowing you to assign timed access and monitor precise entry logs in real-time.
BSL-S3 | Technical Specifications & Performance Data
Designed for fast deployment, stable performance and competitive pricing, ideal for distributors, apartment projects and OEM partners.
Project Advantages
1. Ready Stock Models – Fast delivery for quick market entry
2. Factory Direct Pricing – Lower cost for bulk purchasing
3. Proven Stable Design – Reduced after-sales risk
Best For
1. Distributors & Importers
2. Apartment & Rental Projects
3. Budget Smart Lock Markets
Get Bulk Pricing for BSL-S3 Best Selling Smart Lock System
Factory-direct pricing and professional OEM/ODM support for apartment and rental projects.
Fast response within 24 hours · OEM support available · Global shipping