DSX WinDSX D10202 33-Bit Card: Complete Buyer's Guide
DSX Access Systems’ WinDSX platform uses a proprietary 33-bit proximity format — the D10202 — rather than the standard 26-bit Wiegand found in most generic card lines. If you have tried ordering standard HID or 26-bit clamshell cards for a DSX system and had them fail to read, the format mismatch is almost certainly the reason. American Key Cards supplies compatible prox cards in the D10202 33-bit format, programmed to your facility code, with no dealer account required. For full technical specifications, see our DSX Access Systems format page.
What Is the DSX D10202 33-Bit Format?
The D10202 is DSX Access Systems’ native proximity format, carried on a 125 kHz passive credential. The bit structure expands well beyond the traditional 26-bit card, giving DSX installations a much larger card-number space.
Key technical specifications:
- Frequency: 125 kHz
- Chip: EM4200 / HID-compatible 125 kHz proximity IC, factory-encoded in
D10202format - Bit format: 33-bit Wiegand — facility code range 0–127, card number range 0–16,777,215
- Encryption: None — standard unencrypted 125 kHz proximity
- Cloneable: Yes (with Proxmark3 or T5577 blanks; see security section below)
The 33-bit D10202 structure gives DSX deployments over 16.7 million unique card numbers per facility code — more than 255 times the card-number capacity of a standard 26-bit system. This is particularly useful for larger commercial campuses and multi-building installations where a 26-bit system would exhaust available numbers.
WinDSX panels can also be configured for standard 26-bit H10301 and for 13.56 MHz smart card inputs (HID iCLASS or MIFARE Classic / DESFire) where the appropriate smart readers are installed. The credentials you order must match the format your readers and panel are actually configured to decode.
OEM Part Numbers and Equivalent Credentials
DSX credentials are manufactured and distributed by several parties, which can make sourcing confusing. The commonly referenced OEM part numbers for D10202-format cards and fobs include:
| OEM Part Number | Form Factor | Notes |
|---|---|---|
Identiv 4010S (D10202 33-bit PVC) | ISO PVC card | Standard credit-card size, D10202 encoded |
Identiv 4000 D10202 | Clamshell card | Clamshell housing, D10202 encoded |
1386LGGMN-33D | HID-format ISO card | HID card body, factory-encoded D10202 |
Identiv 4082 D10202 | Key fob | D10202-format ring fob |
These are OEM and distributor references — American Key Cards is not affiliated with DSX Access Systems, Identiv, or HID Global and does not claim to be. Our compatible cards are manufactured to the same D10202 format specification and produce the same Wiegand output to WinDSX panels.
How to Identify a DSX WinDSX System
Before ordering, confirm that your system is genuinely running the D10202 format rather than standard 26-bit mode. Look for these identifiers:
- Reader branding: DSX DX-800 or DX-400 panel-mounted proximity readers on the door frame
- Existing card label: Cards programmed for DSX often display a 33-bit or D10202 designation, or an unusually high card number (above 65,535 — impossible in a 26-bit card)
- Software: WinDSX software on the access control workstation confirms DSX hardware
- Installer documentation: The original system design or commissioning sheet will list the credential format
If existing cards are in service, compare the printed card number with the range limits. A 26-bit card cannot carry a card number higher than 65,535. Numbers above that confirm you are on a 33-bit or wider format.
Compatible Readers for DSX D10202 Credentials
The following readers are commonly deployed with D10202 credentials in WinDSX installations:
- DSX DX-800 and DX-400 panel-mounted proximity readers
- HID 1326 ProxCard II reader (when configured for
D1020233-bit output) - Schlage (XceedID) 7410 reader (when configured for 33-bit)
- Any Wiegand reader programmed for 33-bit
D10202or 26-bitH10301output
DSX panels are capable of accepting Wiegand input from multiple reader types, but the panel and reader must both be configured for the same format. Mixing D10202 cards on readers set to 26-bit mode — or vice versa — will result in access denials.
Can DSX D10202 33-Bit Cards Be Cloned?
Yes — and it is worth being direct about this. The D10202 format operates at 125 kHz with no cryptographic layer. The facility code and card number are transmitted unencrypted and can be read and reproduced by commercially available tools, including the Proxmark3 and T5577 writeable blanks available online.
This is not a weakness unique to DSX. All standard 125 kHz proximity formats share the same characteristic: EM4100, HID H10301, AWID 26-bit, Farpointe Pyramid — none of them carry encryption at the card layer.
If your WinDSX installation handles environments where credential cloning is a genuine concern, DSX panels can be upgraded to support HID iCLASS or MIFARE DESFire smart card readers. Those formats use AES-based authentication and are substantially harder to clone. See our pages on HID iCLASS SE and standard 26-bit HID credentials for a comparison of security levels.
For most commercial office, industrial, and mid-market applications, the D10202 125 kHz proximity credential is entirely appropriate — the risk profile of unencrypted proximity is well understood and acceptable in most of these environments.
Compatible vs. OEM: What the Difference Actually Means
American Key Cards supplies credentials that are compatible by specification — meaning the card is programmed to output the same 33-bit D10202 Wiegand data stream as an OEM DSX-specified credential. The panel receives exactly the same bit pattern, grants or denies access by exactly the same logic, and logs the same facility code and card number.
What differs is the manufacturing source and the price. OEM DSX credentials are distributed through dealer and integrator channels, often requiring dealer relationships, minimum order quantities, and turnaround times driven by distributor stock. AKC orders can be placed directly, in quantities as small as a single card, and are programmed to order.
There is no technical difference at the access panel — the Wiegand output is identical.
Ordering DSX D10202 Compatible Cards
To order compatible D10202 33-bit prox cards or fobs, you need two pieces of information:
- Facility code — a number between 0 and 127 for the
D10202format. This is the site-level identifier shared by all credentials on your installation. - Card number range — the individual numbers to be encoded on each card, from 0 to 16,777,215.
If your existing cards display a printed facility code and card number, that is all you need. If you do not have that information, your original installer or access control administrator should have it in their WinDSX configuration records. We can also advise on how to retrieve this from an existing working card in some cases — contact us and describe your situation.
Cards are available in standard ISO PVC, composite laminate, and clamshell housing. Key fobs in D10202 format are also available for installations where a ring credential is preferred. Both ship ready for immediate enrollment in WinDSX.
Why Non-OEM Costs Less
The price difference between OEM-channel D10202 credentials and AKC-compatible cards comes down to distribution overhead, not quality. OEM credentials pass through distributor and dealer tiers, each adding margin. AKC buys direct and sells direct, removing those intermediary costs. The RFID chip is the same 125 kHz proximity IC; the programming is to the same D10202 specification; the Wiegand output is bit-for-bit identical.
For a property manager replacing 20 lost fobs or a facility team reordering 200 cards for a new tenant buildout, the savings on a direct-buy compatible credential add up meaningfully over the lifetime of a WinDSX installation.
Summary
DSX WinDSX systems typically use the proprietary D10202 33-bit proximity format, not the standard 26-bit cards that most suppliers stock. The format runs at 125 kHz with no encryption — reproducible from facility code and card number, and available from American Key Cards without a dealer account. Confirm your facility code and card number range, and your replacement credentials can be programmed and shipped quickly.
For questions about your specific WinDSX configuration, format verification, or bulk ordering, contact American Key Cards and we will help you confirm the right credential before you order.
Frequently asked questions
What card format do DSX WinDSX systems use?
DSX Access Systems primarily use the proprietary 33-bit D10202 format, which operates at 125 kHz and supports facility codes from 0 to 127 with card numbers from 0 to 16,777,215. WinDSX panels also accept standard 26-bit H10301 and 13.56 MHz smart card credentials where the appropriate readers are installed.
Are DSX D10202 33-bit cards cloneable?
Yes. DSX D10202 33-bit cards are standard 125 kHz proximity credentials with no encryption layer. They can be reproduced using commercially available RFID tools such as a Proxmark3 or T5577 blank. Where stronger security is required, WinDSX also supports HID iCLASS and MIFARE DESFire readers, which are significantly more resistant to cloning.
What information do I need to order DSX D10202 compatible cards?
You need your facility code (0 to 127 for D10202 format) and the card number range you want programmed (0 to 16,777,215). These are typically available from your existing cards, your access control administrator, or your original installer's documentation. American Key Cards programs each card to your exact specification.
Will a standard 26-bit HID card work in a DSX WinDSX system?
Only if your WinDSX panel and readers have been configured for 26-bit H10301 input. Many DSX installations are configured for the native 33-bit D10202 format, in which case a standard 26-bit card will not authenticate. Check your system configuration or contact your installer to confirm which bit format your readers output.
