Compatible with Lenel
Lenel-compatible cards & key fobs
Security ID Systems supplies compatible replacement credentials for 4 Lenel formats, encoded by specification to read identically on your existing Lenel equipment. A fraction of OEM pricing — and we are not affiliated with Lenel.
Compatible Lenel formats (4)
Lenel 42-bit (L11601-adjacent)
Compatible with Lenel
- Chip
- T5577 / EM4305
- Format
- 42-bit: parity + 14-bit site + 12-bit card +…
Lenel 42-bit (L11601 family note)
Compatible with Lenel
- Chip
- T5577 / EM4305
- Format
- 42-bit: leading parity + 14-bit site code + …
Lenel / S2 (OnGuard, L11601 36-bit)
Compatible with LenelS2
- Chip
- T5577 / EM4305
- Format
- Parent: Lenel 36-bit L11601 (proprietary, HI…
Lenel L11601 36-bit
Compatible with LenelS2
- Chip
- T5577 / EM4305
- Format
- 36-bit L11601 Lenel format (distinct encodin…
Lenel credentials span
Lenel 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.
Lenel compatibles — common questions
Are these genuine Lenel cards?
No — every credential is an independently manufactured compatible product, not an Lenel-branded one. Security ID Systems is independent and is not affiliated with, authorized by, or endorsed by Lenel. Our cards are engineered by specification to read identically on Lenel readers.
Which Lenel formats can you supply compatibles for?
We currently document 4 compatible Lenel formats, 2 of which are rare formats with no compatible sold elsewhere online. If your exact Lenel 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 Lenel 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 Lenel 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.