AMAG Symmetry S10401 (37-bit Proximity) Compatible Cards & Fobs
The Symmetry house format: S10401's 37-bit layout pairs a small facility-code field (0–63) with an enormous card-number space — over half a billion values — across AMAG, SETEC, and MDI PointGuard installations.
Does American Key Cards make AMAG Symmetry S10401 (37-bit Proximity) compatible cards?
Yes — American Key Cards supplies unbranded AMAG Symmetry S10401 (37-bit Proximity) compatible cards and key fobs (AKC S10401-Compatible 37-Bit Card), encoded to your facility code and card-number range and ready to use on your existing AMAG (Symmetry) readers. No hardware changes and no dealer account required.
- 125 kHz
- Frequency
- RFID prox (standard Wiegand)
- Technology
- 1
- Bit format
- 4+
- OEM part nos.
- American Key Cards
- Order from
S10401 reflects a design philosophy: keep the facility codes few and let the card numbers run essentially forever. With only 64 possible facility codes but more than 536 million card numbers under each, an AMAG Symmetry estate can issue credentials for decades without number planning ever becoming a problem — which is exactly what large government, healthcare, and university deployments wanted. The format traces back through the SETEC and MDI PointGuard lineage that AMAG absorbed, so buildings whose paperwork names any of the three are usually running the same 37-bit structure. Replacement credentials are a pure programming exercise: we manufacture unbranded, compatible-by-specification S10401 cards and fobs to your facility code and card-number range, verify the 37-bit structure on the bench, and ship stock that enrolls in Symmetry exactly like your existing fleet.
AMAG Symmetry S10401 (37-bit Proximity) specifications
- System brand
- AMAG Technology
- Technology
- Passive RFID proximity (standard Wiegand)
- Frequency
- 125 kHz
- Credential platform
- Standard 125 kHz proximity IC programmed in the S10401 37-bit Wiegand structure
- Bit formats
- S10401 37-bit Wiegand (facility code 0–63, card number 0–536,870,911) — AMAG / SETEC / MDI PointGuard lineage format
- OEM part numbers
- 920PSNNAN, 921PTNNAN, DTC-S10401, ISO-S10401
Specifications reviewed August 2026
Our compatible AMAG Symmetry S10401 (37-bit Proximity) credentials
American Key Cards manufactures unbranded credentials engineered to work with your existing AMAG (Symmetry) readers — no hardware changes, encoded to your facility code and card-number range before they ship.
Full specifications, form factors and ordering FAQ: Standard 125 kHz proximity cards
American Key Cards is an independent manufacturer of unbranded, compatible-by-specification credentials. We are not affiliated with, endorsed by, or sponsored by AMAG (Symmetry), and we never supply OEM-branded product — for brand-original credentials, order from AMAG (Symmetry) or an authorized dealer. Brand names appear only to identify compatibility, and all trademarks remain the property of their respective owners.
Where AMAG Symmetry S10401 (37-bit Proximity) is used
- Enterprise and corporate facilities running AMAG Symmetry access control
- Government, healthcare, and education sites on Symmetry infrastructure
- Badge replacement for legacy SETEC / MDI PointGuard installations
- Add-on credentials for new staff on existing S10401 deployments
Works with these readers
Related formats
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HID Prox H10301 (Standard 26-Bit)
The most widely deployed proximity format in North America: 26-bit Wiegand — an 8-bit facility code plus 16-bit card number — on the 125 kHz HID Prox platform, live on millions of doors.
View compatible cardsHID Corporate 1000 (35-bit)
Not just a bigger prox format — a managed, registered format program. A facility guide to what Corporate 1000 controls and why credentials come only through HID's channel.
How it worksAWID 37-Bit
AWID's extended-capacity format: a 35-bit globally unique card number in the H10302 structure — no facility code at all — carried over AWID's 125 kHz air interface for larger fleets that outgrew 26-bit.
View compatible cardsAMAG Symmetry S10401 (37-bit Proximity) — FAQ
What is the S10401 37-bit format?
A Wiegand layout used across AMAG Symmetry systems: a 6-bit facility code (values 0–63) and a 29-bit card number (up to 536,870,911), framed by parity. Its huge number space is why large institutions standardized on it.
Will your S10401-compatible cards work on existing Symmetry readers?
Yes — the readers pass the 37-bit data to the panel just as they do for your current stock, and Symmetry enrolls the new numbers through your normal process. Nothing about readers, panels, or software changes.
My paperwork says SETEC or PointGuard, not AMAG — same format?
Almost certainly. AMAG's Symmetry platform carries the S10401 structure inherited from the SETEC / MDI PointGuard line, so legacy documentation under those names usually describes the same credentials. A working sample card confirms it definitively.
What do you need to program a batch?
Your facility code (0–63), the card-number range to issue, and your preferred form factors. A Symmetry credential report or photos of a current card cover the values; we verify the encoding before production.