Compatible with Gallagher
Gallagher-compatible cards & key fobs
Security ID Systems supplies compatible replacement credentials for 4 Gallagher formats, encoded by specification to read identically on your existing Gallagher equipment. A fraction of OEM pricing — and we are not affiliated with Gallagher.
Compatible Gallagher formats (4)
Gallagher / Cardax IV (LF 125 kHz)
Compatible with Gallagher
- Chip
- T5577 / EM4305
- Format
- Gallagher LF format: 4-bit region code (A-P)…
Gallagher / Cardax (LF Cardax IV + HF MIFARE/DESFire)
Compatible with Gallagher Security
- Chip
- T5577 / EM4305
- Format
- Credential tuple: 4-bit region code (A-P) + …
Gallagher / Cardax HF (MIFARE Classic / DESFire / Plus)
Compatible with Gallagher
- Chip
- Genuine NXP MIFARE DESFire / Classic 1K
Cardax/Gallagher HF (DESFire/MIFARE, diversified) - LF-bridge note
Compatible with Gallagher
- Chip
- Genuine NXP MIFARE Classic 1K
- Format
- Same Gallagher tuple (4-bit region + 16-bit …
Gallagher and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with. MIFARE and DESFire are registered trademarks of NXP B.V.
Gallagher compatibles — common questions
Are these genuine Gallagher cards?
No — every credential is an independently manufactured compatible product, not an Gallagher-branded one. Security ID Systems is independent and is not affiliated with, authorized by, or endorsed by Gallagher. Our cards are engineered by specification to read identically on Gallagher readers.
Which Gallagher formats can you supply compatibles for?
We currently document 4 compatible Gallagher formats, 4 of which are rare formats with no compatible sold elsewhere online. If your exact Gallagher format isn't listed, send the part number or a sample — we cover more than we publish.
Will a compatible card work in my existing Gallagher system?
Yes, when encoded correctly. We match the frequency, data structure and — where applicable — your facility code and card-number range, so the credential presents exactly what your readers expect. We confirm compatibility before production.
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Need a compatible Gallagher credential?
Send the part number printed on your card or a photo of the reader. We confirm compatibility before you order — and we cover the specialist formats nobody else lists.