How the compatible EM4305 / EM4469 works
The EM4305 / EM4469 is a 125 kHz low-frequency proximity credential — the band most legacy prox readers use. Its data structure is Configurable ASK/FSK/PSK/Manchester/biphase; native EM4100/EM4200 emulation + FDX-B (134.2 kHz). When you present a credential, the reader decodes that exact structure and passes it to your access-control panel as a card number it recognises.
As a programmable blank, the EM4305 / EM4469 is the raw material the rest of the catalogue is built on. We supply it factory-fresh and rewritable on the EM4305 platform, so you — or we — can encode it to emulate the proximity format your readers expect. It is the backbone of every 125 kHz compatible credential we ship.
To order, tell us the part number or format printed on your existing EM Microelectronic card, and our specialists confirm the encoding before anything ships. Bulk and reorder quantities are welcome — pricing is a fraction of OEM list, and every credential is verified to read on your existing equipment.
Also known as
EM4305 · EM4205 · EM4469 · EM305 · M101 · xEM (EM variant)
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.