TK4100 Proximity RFID Key Fobs

Proximity RFID Key Fobs are compact, durable access control devices designed for secure, contactless identification. Operating at 125 kHz or 13.56 MHz (depending on chip type), these fobs enable fast and reliable entry to offices, residential buildings, hotels, and other controlled-access environments.

Engineered for daily use, the fobs feature robust housing resistant to scratches, moisture, and everyday wear. They are compatible with most standard RFID readers and access control systems, supporting seamless authentication and programmable security features.

As a professional RFID manufacturer, we provide bulk production and full OEM customization of proximity RFID key fobs. Options include chip selection, color, engraving or printing, UID encoding, and packaging. With factory-direct pricing, consistent quality, and scalable production capacity, our RFID key fobs offer a reliable and cost-effective solution for businesses, property managers, and security integrators deploying access control systems at scale.

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Specification Details
Product Name ABS Proximity ID Keyfobs
Material ABS
Color Options Black
Yellow
Red
Green
Blue
Customized colors available
Size Universal standard size or customized
Unit Weight 5.5 – 7.5 g per piece
Personalization Options Silk screen printing
Serial number printing
Barcode printing
QR code printing
Chip encoding
Frequency Options 125 kHz (LF)
13.56 MHz (HF)
860 – 960 MHz (UHF)
Supported Protocols ISO 11784/785
ISO 14443A
ISO 18000-6C
Write Endurance ≥ 100,000 cycles
Available Chips TK4100
EM4200
EM4305
T5577
NXP MIFARE S50 / S70
NFC NTAG213 / 215 / 216
Ultralight EV1
Fudan 1K
ICODE SLi-X(S)
Alien H3 / H4
Monza 4QT
Memory Options 512 bits
144 bytes
504 bytes
888 bytes
Depending on chip selection
Packing 100 pcs per OPP bag
Carton Size 35 × 25 × 25 cm
Carton Weight Approx. 7.5 kg per 1000 pcs
Applications Access control
Attendance management
Personnel identification
Security systems

Product Highlights

Our RFID Key Fobs offer reliable and durable access control solutions with multi-frequency support (125kHz, 13.56MHz, 860–960MHz). Proximity Key Fobs are ideal for attendance systems and secure identification. Designed with ABS material and universal or customized sizing, these key fobs provide long-lasting performance in demanding industrial and corporate environments.

Applications & Use Cases

These RFID and Proximity Key Fobs are widely used across various industries, including:

  • Access Control Systems for offices, factories, and secured facilities
  • Attendance Tracking in corporate, educational, or industrial settings
  • Identification and Security for employees, visitors, or assets

For related products, explore our RFID Tags and Access Control Solutions to find compatible systems.

Technical Advantages

Engineered for professional deployment, our key fobs feature:

  • High write endurance: ≥100,000 cycles ensures long-term reliability
  • Multi-chip compatibility: TK4100, EM4200, EM4305, T5577, MIFARE S50/S70, NTAG213/215/216, Ultralight EV1, Alien H3/H4, Monza 4QT, etc.
  • Flexible personalization: Silk printing, serial numbers, bar codes, QR codes, encoding, and OEM customization
  • Compact and lightweight: 5.5–7.5g per unit with universal or customized sizing

These features make them suitable for industrial, corporate, and security applications where performance and durability are critical.

Why Choose XIUCHENG RFID

Manufactured by XIUCHENG RFID, these key fobs are produced under strict factory quality control, ensuring consistent performance and reliability. We support full customization, from color and size to chip encoding, making them a trusted choice for large-scale deployments and system integrators.

FAQ

Q1: What is the difference between an RFID Key Fob and a Proximity Key Fob?
A1: RFID Key Fobs can operate across LF, HF, and UHF frequencies and are suitable for system integration, while Proximity Key Fobs are typically LF-based and optimized for quick access control and attendance verification.

Q2: Which chip should I choose for my access control system?
A2: Chip selection depends on your system protocol (ISO14443A, ISO11784/785, ISO18000-6C) and memory requirements. Multi-chip support in our key fobs ensures compatibility with most commercial and industrial readers.

Q3: Can I customize the appearance or encode data on the key fob?
A3: Yes. We offer silk printing, serial numbers, barcodes, QR codes, and chip encoding to meet your project requirements.

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