# Dual-Frequency RFID Cards — LF + HF / HF + UHF

URL: https://proudtek.com/products/rfid-cards/dual-frequency-rfid-card/
Source URL: https://proudtek.com/products/rfid-cards/dual-frequency-rfid-card/
Generated: 2026-03-16T01:42:30.697Z
Kind: product
Publisher: Proud Tek Co., Limited
Author: Proud Tek Co., Limited
Credentials: ISO 9001:2015, ISO 14001:2015, RoHS Compliant, CE Marking, REACH Compliant
Image: https://proudtek.com/landing-images/dual-frequency-rfid-card-hero.jpg
Image Alt: Hand holding a plain white RFID card up to a black wall-mounted reader

## Description
A dual-frequency RFID card embeds two electrically independent RFID inlays — tuned to different bands. Inside one ISO/IEC 7810 ID-1 card body. The...

## Procurement Snapshot
- Best fit: Dual-Frequency RFID Cards — LF + HF / HF + UHF is suitable for RFID or NFC identification, access, and OEM customization projects.
- Key options: Form Factor: Card format compatible with common access-control, ID, or NFC workflows.
- Customization: Confirm artwork, encoding, material, chip, and finish requirements before quoting.
- Quote checklist: Reference Dual-Frequency RFID Cards — LF + HF / HF + UHF in your inquiry so the matching product page stays attached to the quote. Card format compatible with common access-control, ID, or NFC workflows. Share target chip or protocol,...

## Key Specs
- Form Factor: Card format compatible with common access-control, ID, or NFC workflows.

## FAQ
- Q: Can both chips be read simultaneously?
  A: No — each chip only responds to its own frequency. When the card is presented to a 125 kHz reader, only the LF chip responds; at a 13.56 MHz reader only the HF chip responds; at a UHF reader only the UHF inlay responds. The rails operate independently and do not interfere — that is the point of frequency isolation.
- Q: Is the card thicker than a standard RFID card?
  A: Slightly. Single-chip cards are 0.76 mm; dual-frequency cards are 0.84 mm due to the additional antenna layer. The 0.08 mm difference sits inside ISO/IEC 7810 tolerance and is imperceptible in normal handling. The card fits every standard holder, lanyard, wallet, and card printer without modification.
- Q: How do I link the two chip IDs in my access-control system?
  A: Every Proud Tek dual-frequency order ships with a CSV mapping file listing LF UID, HF UID, and UHF EPC (where applicable) for every card. Import the CSV into HID ProWatch, Lenel OnGuard / Mercury, Genetec Security Center, Software House C•CURE 9000, Honeywell Pro-Watch, or Gallagher Command Centre to associate both credentials with the same cardholder. The system then recognises the user from either rail — whether they tap at an LF door, an HF turnstile, or drive through a UHF portal.
- Q: Can dual-frequency cards be printed on a standard ID card printer?
  A: Yes. The card conforms to ISO/IEC 7810 ID-1 and works with every standard direct-to-card and retransfer printer — Evolis, Magicard, HID Fargo, Zebra, Entrust. The inlays are positioned to avoid the print-head contact zone, so full-colour photo ID printing and lamination proceed normally. The 0.84 mm thickness requires the printer card-feeder to be set to its thick-card setting but otherwise is transparent to the operator.
- Q: What is the minimum order quantity and lead time?
  A: MOQ 500 cards for custom-printed dual-frequency with your choice of chip pairing, artwork, and encoding. Lead time is 12-18 business days from artwork approval. Sample packs of 50 cards with standard pairings (e.g. EM4100 + MIFARE Classic 1K) in plain white are available for prototyping and pilot deployments before committing to production quantities.

## Machine Routes
- JSON: https://proudtek.com/machine/products/rfid-cards/dual-frequency-rfid-card.json
- Text: https://proudtek.com/machine/products/rfid-cards/dual-frequency-rfid-card.txt