What warranty and after-sales service are provided?

We provide a 12-month warranty for all products and offer free spare parts as part of our after-sales service.

Can the logo be customized?

Yes, we support customized logos and offer flexible customization options including minor customization and customization from designs or samples.

What certifications does the product have?

Our products are manufactured under ISO9001:2015 quality management and hold certifications such as CE, FCC, and ROHS.

Round Knob Electronic Door Lock for Home Door

Name: Round Knob Electronic Door Lock for Home Door
Brand: Fujian Chainfun Electronic Technology Co., Ltd.
SKU: 2132365595

Fujian, ChinaFujian Chainfun Electronic Technology Co., Ltd.

US$37.00

10-99 Pieces

US$35.00

100-499 Pieces

US$33.00

500-999 Pieces

US$29.00

1,000+ Pieces

Sample price:US$70.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Free Spart Parts

Warranty

12 Months

Model NO.

CF06

Material

Aluminum Alloy

Type

Electronic

Style

European

Shape

Mortise Door Lock

Anti-theft Standard

Part

Lock

Backset

60mm

Door Thickness Fits

35-65mm

Lock Cylinder Length

Single Latch/5050

Usage

Household Door Locks, Bedroom, Channel Lock

Transport Package

Standard Export Packing

Specification

240*60*21mm

Trademark

ChainFun

Origin

Fujian, China

HS Code

8301400000

Production Capacity

200000

Key features

4-in-1 Keyless Entry: Supports fingerprint, PIN code, backup key, and Bluetooth/APP unlocking.

Smart APP Control: TUYA APP allows user management, remote unlock, and status monitoring via Bluetooth.

Anti-Peep Password: Random digits can be added before/after the correct password to prevent observation.

Long Battery Life: Powered by 4 AA batteries with low standby current, lasting up to one year.

Durable Construction: Zinc alloy shell is collision-proof, waterproof, and rust-proof for outdoor use.

Easy DIY Installation: Fits doors 35-65mm thick; installs in minutes using existing holes without extra drilling.

Flexible Customization: Supports customized logos and minor customization options for branding needs.

Multi-Mode Operation: Features auto-relock, passage mode, temporary visitor mode, and combination unlocking.

Company profile

High Repeat Buyers ChoiceCustomization from SamplesR&D CapabilitiesDigital Management Enterprise

Fujian Chainfun Electronic Technology Co., Ltd.

Fujian, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 Years CertifiedNearest Port: Xiamen PortAverage Response Time: ≤6.40h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryFujian Chainfun Electronic Technology Co., Ltd. is a China-based limited trading company established in 2019 with nine employees. It reports professional technical R&D capability, customization from designs and samples, and annual smart door-lock productivity of 200,000 sets. However, it does not provide 3D software design, ODM, SDK, or popular-brand OEM services, and reported no new products in the past year. Export sales are stated at 90%, with six years of exporting experience, but another record states that no valid import/export license is held. Service-quality controls are weakly documented: complaint handling and corrective/preventive actions have no written procedures or records. The supplier has no overseas warehouses, showrooms, agents, branches, or offline trade-show experience. No certification, financial-strength, or customer-case evidence is provided.

After-Sales capabilityThe supplier has no overseas warehouse, showroom, agent, or branch, and has not participated in offline trade shows. Its complaint-handling and corrective/preventive-action mechanisms have no written procedures or records, although relevant service-capability records exist; this indicates a documented-service weakness.

R&D capabilityThe supplier is described as having professional technical R&D capability and offering multiple customization modes, but it reported no new products during the past year and does not provide ODM services, SDK availability, or 3D software design services. The evidence therefore shows technical capability but limited recent product-development breadth.

Production capacityAnnual productivity is stated as 200,000 smart door-lock sets, with peak- and off-season lead times both within 15 workdays. However, the company is classified as a trading company, and the slices do not establish whether this capacity is owned manufacturing capacity or supplied through partners.

Customization capabilityThe supplier explicitly offers full, minor, and flexible customization, including customization from customer designs and samples. This is consistent across the R&D and design-service records and demonstrates broad stated customization support.

Product Q&A

Q:What unlocking methods are supported?

The lock supports four methods: fingerprint, PIN code, mechanical backup key, and Bluetooth/APP control via the TUYA app.

Q:How does the anti-peep password feature work?

Users can enter random digits before or after the correct password. The system accepts this combination, preventing others from guessing the actual code.

Q:What is the battery life and power supply type?

It uses 4 AA alkaline batteries. With a low standby current of approximately 100uA, the battery life lasts up to one year. It also has a Type-C emergency charging port.

Q:What door thicknesses are compatible with this lock?

The lock fits doors with a thickness ranging from 35mm to 65mm. The mounting hole diameter should be between 45mm and 60mm.

Q:Is the installation process difficult?

No, it is designed for easy DIY installation. It takes only several minutes and uses the door's existing holes without needing to drill extra holes.