RFID Key Fobs

RFID Key Fobs

B-Id offers RFID key fobs that are available in three frequency ranges: 125 kHz (LF), 13.56 MHz (HF), and 868 MHz (UHF). These key fobs can also be configured to operate on a combination of these frequencies.

They are primarily designed for use in access control systems or time and attendance systems. Additionally, they also offer optional functions such as logo printing, logo on the tool, numbering, and pre-programming. The key fobs are categorized into five series: KF1x, KF2x, KF3x, KF4x, and KF5x.

Yiwen Jin

Since its establishment in 2002, B-Id has become one of the leading developers, manufacturers and suppliers of RFID hardware for the European and North American markets.

Yiwen Jin
Managing Director
Hannoversch Münden, Germany

Key Facts:

  • Possible materials: Fiber glass FR4, PVC, PC
  • Operating temperature (°C): -20 - 70
  • Frequency: 125 kHz, 13.56 MHz and 868 MHz
  • Optional functions such as logo printing, logo in tool, numbering and pre-programming are possible.
  • Color: White, black, green, blue, red, grey, yellow


  • Access Control
  • Time Recording

B-Id is a leading developer, manufacturer, and supplier of RFID hardware, fingerprint and display cards with a focus on the European market.

The portfolio includes but is not limited to:

  • Key fobs in LF, HF, UHF & frequency combinations
  • Industrial transponder OEM/ODM
  • RFID transponders LF, HF, UHF & frequency combinations: tags, tokens, on-metal tags
  • High-temperature UHF labels and inlays with a temperature resistance of up to 250 degrees Celsius
  • Antenna/inlay design for customer-specific projects
  • Fingerprint ISO cards with and without battery, DOT Matrix Display ISO cards

Product Category


Application Fields

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Customized RFID Transponders
UHF RFID Transponders
RFID Cable Transponders
Industrial RFID Transponders
RFID Key Fobs
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