Custom Printed 125kHz RFID Access Cards & Key Fobs – EM4200 / TK4100 - Image 1

Custom Printed 125kHz RFID Access Cards & Key Fobs – EM4200 / TK4100

Get a Quote

Custom printed 125kHz RFID cards and key fobs for compatible low-frequency access control, identification, attendance and membership systems.

Available with EM4200 or TK4100 chips in card, key fob and token formats, with custom printing, numbering, UID print and optional dual-frequency configurations combining LF and HF technology in one product.

  • ✔ 125kHz LF RFID — EM4200 / TK4100
  • ✔ Cards, key fobs and token formats
  • ✔ Custom printing & variable data
  • ✔ Dual-frequency options — combine LF + HF in one card or fob
  • ✔ Suitable for compatible access, ID and attendance systems
Description

Custom Printed 125kHz RFID Cards & Key Fobs

Our 125kHz RFID cards and key fobs are designed for compatible low-frequency access control, identification, attendance and membership systems using EM4200 or TK4100 technology.

Products can be supplied as CR80 cards, key fobs, tokens and other compact formats, with full custom printing, UID print, numbering, QR codes, barcodes and variable data options.

Cards, key fobs & token formats

125kHz RFID is widely used in compact access credentials, particularly key fobs and proximity tokens.
We can produce a range of formats depending on your system and application.

  • RFID access cards — standard CR80 card format
  • RFID key fobs — compact and convenient for everyday access
  • RFID tokens — round or bespoke formats
  • Custom shapes — subject to project requirements

Chip options

  • EM4200 — 125kHz read-only RFID commonly used for access and identification
  • TK4100 — 125kHz read-only proximity chip widely used in compatible access systems

Other LF chip options can also be quoted depending on your reader and system requirements.

Dual-frequency RFID options

For projects that need to work across more than one system, we can also manufacture dual-frequency RFID cards and key fobs, combining a 125kHz LF chip with a 13.56MHz HF/NFC chip in the same product.

Typical combinations can include:

  • EM4200 / TK4100 + MIFARE Classic
  • EM4200 / TK4100 + MIFARE DESFire
  • EM4200 / TK4100 + NTAG
  • Other LF + HF combinations on request

Dual-frequency products are useful where one credential needs to operate across legacy LF systems and newer HF/NFC infrastructure.

Popular applications

  • Office and workplace access control
  • Staff ID and attendance systems
  • Gyms, leisure centres and locker systems
  • Schools, colleges and campuses
  • Parking and gated access
  • Membership and club access
  • Legacy system migration using dual-frequency credentials

Custom printing & personalisation

  • Full-colour printing
  • Company logo and artwork
  • UID printing
  • Sequential numbering
  • QR codes and barcodes
  • Variable data
  • Names, staff numbers or membership numbers

Check compatibility before production

125kHz systems can use different chip types and identification formats.
If you are replacing an existing card or fob, send us a sample, chip specification or reader/system details and we can help identify the most suitable option before production.