Keri Systems Compatible Cards & Fobs
Keri Systems is a major North American access control brand with one of the most widely installed legacy proprietary formats (MS/MicroStar) alongside standard 26-bit, encrypted NXT, and 13.56 MHz MIFARE credentials. American Key Cards supplies compatible credentials across Keri's standard-prox formats (MS, 26-bit, Proximité) and the NXT encrypted series; Keri's MIFARE credentials use custom sector programming not available off-the-shelf, and AKC offers compatible versions for verified system owners.
Supported formats
Keri Systems formats we make compatible cards for
Pick your exact format for specs, OEM part-number equivalents, and a quote. Not sure which you have? Here's how to identify it.
Keri Systems MS Format (MicroStar)
Keri MS (MicroStar) is a proprietary 125 kHz proximity format used exclusively with Keri MicroStar readers and PXL-500P Tiger controllers, one of the most widely deployed legacy formats in North American commercial buildings.
View compatible cardsKeri Systems NXT
Keri Systems NXT is a proprietary 125 kHz proximity format with encrypted card-to-reader communication used exclusively with Keri's NetXtreme reader line.
View compatible cardsKeri Systems NXT MIFARE (13.56 MHz Smart Card)
Keri Systems' MIFARE-based smart card credentials (DK4-3, DC4-1) operate at 13.56 MHz with NXP MIFARE Classic 4K chips and Keri's proprietary application programming, providing clone-resistant access control for Keri Delta-series readers.
View compatible cardsKeri Systems Proximité
Keri Proximité (PSC-1 credential family) is a 125 kHz proximity format used with Keri Pyramid Series readers, encodable in standard 26-bit Wiegand or custom Wiegand formats with a lifetime warranty on OEM cards.
View compatible cardsKeri Systems PXL-250 / Keri Classic 26-bit (K-Format)
Keri Systems 26-bit (KC-26X / PSK-3) cards use the industry-standard H10301 Wiegand format, compatible with Keri IntelliProx 2000 controllers and any standard Wiegand reader.
View compatible cardsProduct lines for Keri Systems systems: Keri-compatible proximity cards & fobs
Keri Systems guides
Keri MicroStar MS Format Card Replacement Guide
Keri MS format cards are nearly impossible to source outside OEM channels. Learn which readers need them and how to order compatible aftermarket replacements.
Keri MS Format vs. Keri 26-Bit: Which System Do You Have?
Keri PXL-500P uses MS format cards. Keri PXL-250 and IntelliProx 2000 use standard 26-bit. Order the wrong type and nothing reads. Confirm your Keri format before you buy.
Keri Systems NXT Compatible Cards: NetXtreme Reader Guide
Keri NXT credentials use an encrypted 125 kHz protocol that generic prox cards cannot replicate. Find out which readers need NXT-format cards and how to order compatible replacements.
Need Keri Systems cards in volume?
Tell us your Keri Systems format and quantity — we'll quote compatible cards and fobs, encoded to your facility code, usually within one business day.
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