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Cheap RFID 125kHz RFID Keyfob Tk4100 with Colorful
US$0.05-0.80
500 Pieces
Sample price:US$0.50/piece.Request sample
Product profile
Customization
AvailableShape
CustomizedKind
IC CardType
Non-contactApplication
Social Security Card, Community Card, Hotel Card, Enterprise Card, Traffic Card, Supermarket Card, Campus Card, Smartcard ApplicationStyle
KeychainColor
Grey,Blue,Red,Green,Black,EctReading Range
1-5cmProtocol
ISO11784/785Effective Life
10 YearsPower Supply Mode
Passive CardFrequency
Low Frequency or High FrequencyTransport Package
Package: 100PCS/Bag, 5000PCS/CTN WeightSpecification
customizedTrademark
OEMOrigin
ShenzhenHS Code
8523521000Production Capacity
50000pieces/DayKey features
Customizable Color Options: Available in grey, blue, red, green, black, and yellow.
Multi-Format Chip Support: Supports TK4100, EM4305, T5577, and HF chips like NTAG213/215/216.
Wide Application Scope: Ideal for access control, attendance, logistics, and public transport.
Durable Material Options: Made from ABS, silicone, PVC, leather, or epoxy for longevity.
Fast Production Lead Time: Standard lead time is 7 days after payment confirmation.
OEM/ODM Manufacturing: We accept OEM manufacturing for RFID smart key fobs.
Low Power Consumption: Passive card design requires no internal power supply.
Versatile Frequency Range: Supports both Low Frequency (125KHz) and High Frequency (13.56MHz).
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2019-04-29 CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤3.84h CertifiedTerms of Payment: T/T, PayPal, Western Union
AI-Powered supplier vetting
SummaryJingZhou SynTek Smart Technology Co., Ltd. is a China-based limited company and factory established in 2017, focused on RFID cards, tags, labels, blocking cards, key fobs, smart cards, and related products. The supplier reports 182 employees, five production lines, 11–20 quality-control staff, four years of R&D-engineer experience, and peak- and off-season lead times within 15 workdays. It offers custom functions, shapes, and materials, maintains its own mold production line, and states that it can develop readers and chips. Export activity began in 2019, with 71%–90% of sales reportedly from exports and Europe identified as a primary market. The evidence supports manufacturing, product development, customization, and international sales capabilities. However, no formal certification, detailed after-sales process, or independently verifiable customer references are provided. Financial information is not assessed.
Supplier typeThe supplier is identified as a factory/manufacturer in the manufacturing industry and operates as a limited company established in China. Its stated product scope centers on RFID cards, tags, labels, blocking cards, key fobs, and smart cards, indicating a specialized RFID-related manufacturing supplier.
After-Sales capabilityThe supplier states that it provides technical consulting, support, professional technician assistance, and customer service. These statements indicate an available support orientation, but no detailed after-sales workflow, warranty terms, response standards, or service performance evidence is provided.
R&D capabilitySynTek reports its own mold production line, capability to develop readers and chips, R&D and manufacturing of RFID products, and research into blocking key cases and phone cases beginning in 2017. The supplier is also associated with high-tech and technology-based enterprise classifications, supporting an innovation capability assessment.
Production capacityThe supplier reports five professional production lines, 11–20 quality-control staff, peak-season and off-season fulfillment within 15 workdays, and a monthly output of approximately 400,000 TM tags for the Russia market. It also describes manufacturing across multiple RFID and blocking-product categories, providing explicit evidence of production capacity and operational breadth.
Customization capabilityThe supplier explicitly offers customized tags and labels by function, shape, and material, and states that it can design products in different quantities and sizes. Its own mold production line further supports the stated ability to develop customized product forms.
Client casesThe supplier states that it has been a leading blocking-card supplier to the Europe market during the past three years and the biggest TM-tag supplier to the Russia market, with reported monthly output of approximately 400,000 pieces. These are supplier-reported market examples, but no named customers, contracts, or independently verifiable case studies are provided.
Product Q&A
Q:What chip options are available?
A:
We offer LF chips like TK4100, EM4305, and T5577, as well as HF chips such as F08, F32, MF50, and NTAG213/215/216.
Q:What is the minimum order quantity?
A:
The minimum order quantity (MOQ) is 100 pieces.
Q:What are the common sizes and thicknesses?
A:
Common sizes include 27.9*35mm and 31*40.2mm, with thicknesses of 6.5mm and 5.3mm.
Q:What materials can be used for the keyfob?
A:
Materials include ABS, silicone, PVC, leather, and epoxy.
Q:What is the reading range?
A:
The reading range is typically 1-5cm.
Send Inquiry
*To:
JingZhou SynTek Smart Technology Co., Ltd.
JingZhou SynTek Smart Technology Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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