Indala® FlexPass 26-Bit Compatible Cards & Fobs
The classic Indala credential: standard 26-bit facility-code-plus-card-number data delivered over Indala's PSK-modulated air interface — a different radio language from other 125 kHz systems, on millions of legacy doors.
Does American Key Cards make Indala FlexPass 26-Bit compatible cards?
Yes — American Key Cards supplies unbranded Indala FlexPass 26-Bit compatible cards and key fobs (AKC Indala FlexPass 26-Bit Compatible Card), encoded to your facility code and card-number range and ready to use on your existing Indala readers. No hardware changes and no dealer account required.
- 125 kHz
- Frequency
- 125 kHz prox (PSK modulation — distinct air interface from FSK/ASK prox systems)
- Technology
- 1
- Bit format
- 4+
- OEM part nos.
- American Key Cards
- Order from
FlexPass 26-bit is the format that keeps surprising people who order "any 125 kHz card" and find it reads as blank. Indala systems use phase-shift keying where most other proximity families use frequency- or amplitude-based encoding — the frequency matches, the modulation doesn't, and an Indala 603 or 610 reader only speaks Indala. The data itself is the familiar 26-bit structure, facility code 1–255 and card number 1–65,535, handed to the panel as standard Wiegand. Buildings on this format have typically run it for twenty years or more; the readers don't wear out, the cards do. We manufacture unbranded, compatible-by-specification FlexPass-style cards and fobs programmed to your facility code and number range, verified on the PSK air interface before shipping — so replacements behave exactly like the originals on the readers you already own.
Indala FlexPass 26-Bit specifications
- System brand
- HID Global (Indala line, originally Motorola)
- Technology
- 125 kHz Passive Proximity (PSK modulation — distinct air interface from FSK/ASK prox systems)
- Frequency
- 125 kHz
- Credential platform
- Indala-family 125 kHz PSK-modulated read-only transponder
- Bit formats
- 26-bit Wiegand (H10301-compatible output to panel) — facility code 1–255, card number 1–65,535
- OEM part numbers
- FPCRD-SSSMW-0000, FPISO-SSSCNA-0000, FP4511A (reader), FP3521A (reader)
Specifications reviewed August 2026
Our compatible Indala FlexPass 26-Bit credentials
American Key Cards manufactures unbranded credentials engineered to work with your existing Indala readers — no hardware changes, encoded to your facility code and card-number range before they ship.
Full specifications, form factors and ordering FAQ: Specialty & legacy prox credentials
American Key Cards is an independent manufacturer of unbranded, compatible-by-specification credentials. We are not affiliated with, endorsed by, or sponsored by Indala, and we never supply OEM-branded product — for brand-original credentials, order from Indala or an authorized dealer. Brand names appear only to identify compatibility, and all trademarks remain the property of their respective owners.
Where Indala FlexPass 26-Bit is used
- Legacy commercial office buildings with Indala reader infrastructure
- Multi-tenant residential buildings with Indala 603/610 readers
- University and campus access-control systems
- Parking and gate control with FlexPass readers
Works with these readers
Related formats
You might also need
Indala 27-Bit (Proprietary)
Indala's extended structure: a 13-bit site code (0–8,191) and 14-bit card number (0–16,383) carried over the PSK-modulated Indala air interface — chosen by multi-site systems that needed more site codes than 26-bit offers.
View compatible cardsIndala ASP / FlexSecur
Indala's site-key-encrypted 125 kHz tier — a facility guide to why FlexSecur credentials are site-paired and un-reproducible, and where the open Indala formats we supply differ.
How it worksHID 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 cardsIndala FlexPass 26-Bit — FAQ
Are Indala FlexPass cards compatible with other brands' prox readers?
No — and the reverse is also true. Indala's PSK modulation is a different air interface from FSK/ASK-based systems at the same 125 kHz frequency, so each family's readers only read their own credentials. Match the credential to the reader family, then the format to the panel.
What information do I need to order replacement Indala 26-bit cards?
Your facility code (1–255) and the card-number range to program — both usually printed on existing cards or listed in your access software. Photos of a working card's front and back are enough for us to confirm the format before production.
My readers say HID on them — can this still be the Indala format?
Yes. HID Global acquired the Indala line, so later Indala-family readers and cards carry HID branding while still using the PSK air interface. The model number (603, 610, FP4511A, FP3521A) identifies the family regardless of the logo.
Will compatible cards and original cards work together?
Yes — the panel sees identical 26-bit data from either, so mixed fleets are routine. We recommend continuing your existing number sequence so the access-control records stay tidy.