Compatible with EM Microelectronic
EM Microelectronic-compatible cards & key fobs
Security ID Systems supplies compatible replacement credentials for 5 EM Microelectronic formats, encoded by specification to read identically on your existing EM Microelectronic equipment. A fraction of OEM pricing — and we are not affiliated with EM Microelectronic.
Compatible EM Microelectronic formats (5)
EM4233 / Skidata (ISO 15693)
Compatible with EM Microelectronic; Skidata
- Chip
- Genuine NXP MIFARE / DESFire
- Format
- ISO 15693; 8-byte UID; ~52 blocks (Skidata v…
EM4450 / EM4550 (read/write 125 kHz memory)
Compatible with EM Microelectronic
- Chip
- T5577 / EM4305
- Format
- Page-organized read/write 1Kbit LF memory
EM410x / EM4100 / EM4102 (read-only 125 kHz ID)
Compatible with EM Microelectronic
- Chip
- T5577 / EM4305
- Format
- 40-bit (64-bit Manchester) read-only ID, ASK…
EM4305 / EM4469
Compatible with EM Microelectronic
- Chip
- EM4305
- Format
- Configurable ASK/FSK/PSK/Manchester/biphase;…
EM4200 (read-only 125 kHz ID, EM4100 successor)
Compatible with EM Microelectronic
- Chip
- T5577 / EM4305
- Format
- 64-bit / 128-bit EM read-only ID, ASK/Manche…
EM Microelectronic credentials span
EM Microelectronic 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.
EM Microelectronic compatibles — common questions
Are these genuine EM Microelectronic cards?
No — every credential is an independently manufactured compatible product, not an EM Microelectronic-branded one. Security ID Systems is independent and is not affiliated with, authorized by, or endorsed by EM Microelectronic. Our cards are engineered by specification to read identically on EM Microelectronic readers.
Which EM Microelectronic formats can you supply compatibles for?
We currently document 5 compatible EM Microelectronic formats, 1 of which are rare formats with no compatible sold elsewhere online. If your exact EM Microelectronic 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 EM Microelectronic 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 EM Microelectronic 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.