Continental Access CardAccess 3000 Compatible Prox Cards
Continental Access CardAccess 3000 and CA4K systems use standard 125 kHz Wiegand proximity cards — not a proprietary format. American Key Cards supplies compatible clamshell cards and key fobs programmed to your facility code, available without a NAPCO dealer account, in any quantity you need.
What Is the Continental Access CardAccess Format?
Continental Access, a brand under the NAPCO Security Group, produces two widely deployed access control platforms: the CardAccess 3000 (CA3K) and the more recent CA4K. Both accept standard passive RFID proximity credentials operating at 125 kHz.
The core format used in the vast majority of CardAccess installations is 26-bit Wiegand H10301 — the same open standard used across hundreds of other access control brands. The CA4K platform also supports 36-bit extended, 37-bit H10302, and custom Wiegand formats from 26 to 256 bits, giving larger organizations more card-number capacity. Unless you specifically configured your CA4K for an extended format, your site almost certainly uses standard H10301 26-bit cards.
Because CardAccess 3000 runs on an open, unencrypted 125 kHz proximity standard, compatible aftermarket cards are a straightforward drop-in replacement. No re-coding of readers, no firmware changes, no dealer involvement.
How to Identify Your Continental Access System
Before ordering, confirm which platform you have. A few reliable ways:
- Look at the controller panel. CA3K controllers are typically labeled with the NAPCO or Continental Access logo and carry part numbers beginning with
CA3K. CA4K units similarly carryCA4Kdesignations on the hardware face. - Check the reader. Continental Access proximity readers for CA3K installations often carry OEM part numbers
CA3K-C(card reader) orCA3K-K(keypad reader). CA4K models are labeledCA4K-CandCA4K-K. The CICP2100 and CICP2100S are also common PoE-based CA4K controllers that work with HID-compatible Wiegand readers. - Look at the card itself. Standard 26-bit prox cards usually have a facility code and card number printed on the back, often in the format FC: XXX, CN: XXXXX.
- Check installer documentation. Any system installed by a Continental Access or NAPCO integrator should have a commissioning sheet that identifies the bit format and facility code.
If you are uncertain whether your system uses 26-bit, 36-bit, or another format, contact us before ordering — we can help you identify the right credential.
OEM Part Numbers vs. Compatible Alternatives
The OEM part numbers for Continental Access CardAccess proximity credentials are:
| OEM Part Number | Form Factor | Notes |
|---|---|---|
CA3K-C | Proximity card reader (reader, not card) | CA3K reader — accepts 26-bit prox cards |
CA3K-K | Keypad + proximity reader | CA3K keypad reader |
CA4K-C | Proximity card reader | CA4K reader — 26 to 256-bit Wiegand |
CA4K-K | Keypad + proximity reader | CA4K keypad reader |
CICP2100 | PoE IP controller | CA4K platform, HID-compatible reader ports |
These are the reader and controller part numbers — NAPCO does not publish a single branded card SKU the way HID does. Cards are sourced through NAPCO distributors or integrators, typically as generic 26-bit proximity cards pre-programmed for the site.
American Key Cards supplies the AKC Continental Access-Compatible Proximity Card and AKC Continental Access-Compatible Proximity Key Fob — both programmed to your exact facility code and card number range in standard 26-bit H10301 Wiegand format. These are compatible by specification, produced independently, and not affiliated with NAPCO Security or Continental Access.
Can Continental Access CardAccess Prox Cards Be Cloned?
Yes, with an important clarification about what “cloned” means and what “compatible” means.
CardAccess 3000 and CA4K systems use standard 125 kHz passive proximity technology with no cryptographic protection. The card stores a facility code and card number in unencrypted form. This means:
- Physically clonable: With commercially available RFID duplicator tools (Proxmark3, T5577 blank tags), a technician who has physical access to an existing card can read and copy the credential data to a new card.
- Compatible by specification: American Key Cards produces cards that match the same bit format and carry the credential data you provide — facility code and card number. This is different from copying an existing card; we encode new cards to a number range you supply, exactly as the original integrator would.
If your organization needs stronger credential security, both the CA4K platform and modern NAPCO integrations support smart card and biometric upgrades that replace 125 kHz prox entirely. For the majority of commercial and institutional sites running CardAccess 3000, however, standard 26-bit prox remains the deployed technology.
Compatible Readers for Continental Access Prox Cards
Standard 26-bit proximity cards compatible with Continental Access work in any of the following reader types:
- Continental Access / NAPCO CA3K-series proximity readers
- Continental Access CA4K proximity readers
- CICP2100 and CICP2100S PoE IP controllers with HID-compatible Wiegand readers
- Any HID-compatible Wiegand 26-bit or 37-bit reader connected to a CardAccess or CA4K panel
CardAccess 3000 and CA4K panels communicate with readers via standard Wiegand interface — meaning any reader that outputs a standard Wiegand signal is compatible, regardless of brand. If your building was ever upgraded with different reader hardware, a compatible 26-bit card will still work as long as the panel is programmed to accept that format.
How Continental Access Compares to Similar Formats
CardAccess 3000 runs on the same open 26-bit standard used by many other brands. Here is how the format compares to two of the most commonly cross-referenced systems:
| Feature | Continental Access (CA3K / CA4K) | HID Prox H10301 | Rosslare Proximity |
|---|---|---|---|
| Frequency | 125 kHz | 125 kHz | 125 kHz |
| Bit format | 26-bit H10301 (primary) | 26-bit H10301 | 26-bit H10301 |
| Encryption | None | None | None |
| Extended formats | Yes (CA4K: 36-bit, 37-bit, custom) | Yes (Corporate 1000 35/48-bit) | Standard 26-bit typical |
| Aftermarket availability | Yes (AKC) | Yes (AKC) | Yes (AKC) |
| Cloneable | Yes | Yes | Yes |
As this table shows, the underlying credential technology is consistent across these brands. If you have a Continental Access installation, you do not need to source cards from NAPCO distributors — you need a supplier that can program standard 26-bit Wiegand credentials to your facility code.
For related formats, see our guides on HID Prox H10301 compatible cards and Rosslare proximity card replacements. If you manage a site with mixed brands, Kantech ioProx cards are another common format in similar commercial environments.
Why Non-OEM Continental Access Cards Cost Less
NAPCO and Continental Access sell credentials through an authorized integrator and distributor channel. Integrators typically mark up credentials to cover their own overhead, minimum order quantities may apply, and lead times can stretch if the integrator needs to order from the distributor tier.
American Key Cards purchases and programs credentials directly, passes the reduction along to buyers, and ships in any quantity — whether you need 5 replacement cards or 500. There is no dealer registration, no markup for being a small account, and no minimum order friction.
The cards are compatible by specification: they carry the same 125 kHz passive proximity technology, programmed to the same 26-bit Wiegand H10301 format, with the facility code and card number you provide. The only difference is the manufacturer name on the label and the price.
What You Need to Order
To place an order for Continental Access-compatible cards or fobs, have the following ready:
- Facility code — a number between 1 and 255 for standard 26-bit systems (sometimes labeled Site Code on your panel software)
- Card number range — the starting and ending numbers for the batch (e.g., cards 1 through 50)
- Form factor — clamshell card (standard ISO size) or key fob
- Quantity
If you need to identify your facility code and do not have installer documentation, existing cards typically have it printed on the back. You can also read it from the access control software if you have admin access to your CardAccess 3000 or CA4K configuration.
For questions about format confirmation, quantity pricing, or delivery times, contact American Key Cards directly. We are familiar with Continental Access and CA4K installations and can help you confirm the right credential before you order.
Frequently asked questions
What proximity card format does Continental Access CardAccess 3000 use?
CardAccess 3000 uses industry-standard Wiegand proximity formats, most commonly 26-bit H10301. The CA4K platform extends support to 36-bit, 37-bit, and custom Wiegand structures up to 256 bits. The vast majority of installed CardAccess 3000 sites run standard 26-bit prox cards.
Are Continental Access prox cards proprietary, or will standard 26-bit cards work?
Continental Access readers accept industry-standard Wiegand 26-bit proximity cards — they are not locked to OEM-only credentials. A compatible 26-bit clamshell card or key fob programmed to your facility code will read exactly like the original card, with no system changes required.
What information do I need to order compatible CardAccess 3000 cards?
You need your facility code and the card number range you want assigned. The facility code is typically printed on your existing cards or available from your access control panel software. Contact American Key Cards with those two pieces of information and we will program your order.
Can American Key Cards supply key fobs for CardAccess 3000 systems?
Yes. We supply both standard ISO clamshell cards and key fobs compatible with Continental Access CA3K and CA4K readers, programmed to 26-bit Wiegand with your facility code and card number range. Orders are typically shipped ready to enroll in CardAccess or CA4K software.
