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 cardsKeri Systems guides
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.
Keri Systems MIFARE Smart Card (DK4 / DC4): Buyer's Guide
Need Keri MIFARE smart card replacements? DK4-3 and DC4-1 require Keri's proprietary application programming. Order compatible cards without OEM pricing.
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.