Linear CLM125-H 830-00420 Clamshell Credential Details
The Linear / Nice CLM125-H 830-00420 package contains 25 passive 125 kHz clamshell proximity cards for select HID-compatible access-control readers. Each off-white credential uses the standard 26-bit format and is housed in a sturdy ABS plastic body for regular commercial, residential, and institutional access-control use.
When the card is presented near a compatible reader, the reader obtains its credential data and sends that information to the access controller. The controller then checks the facility code, credential number, cardholder record, access level, authorized doors, schedules, and expiration settings before granting or denying access.
What the CLM125-H Credential Does
The CLM125-H provides a durable physical credential for employees, residents, tenants, contractors, vendors, students, and other authorized users. Its clamshell construction is thicker and more rigid than a printable ISO card.
The card is passive and does not require a user-replaceable battery. It is not a gate remote, garage-door transmitter, Bluetooth mobile credential, reader, or standalone access controller.
Compatible With
- Linear BT125-W Bluetooth and 125 kHz proximity readers
- Linear NBT125-W 125 kHz proximity readers
- Other select readers supporting HID-compatible 125 kHz proximity credentials
- Access controllers accepting the compatible reader's standard 26-bit credential data
- Existing systems using the same facility code and credential-number format
- Identification applications using compatible 14 mil CR80 adhesive-back PVC cards
Exact compatibility depends on both the reader and the access controller. A reader may detect the card while the controller rejects it because of an unsupported format, incorrect facility code, duplicate credential number, disabled cardholder record, or access-level restriction.
Standard 26-Bit Credential Format
Part number 830-00420 is the standard 26-bit version of CLM125-H. Nice/Linear also offers the custom-format version under part number 830-0042C.
The official product page does not publish the facility code or credential-number range for standard part number 830-00420. Verify those details from the physical package, supplier record, or purchase order before adding the cards to an existing access-control database.
Do not order by frequency and bit format alone. Two 26-bit credential batches can use different facility codes or overlapping card numbers.
HID-Compatible 125 kHz Technology
CLM125-H uses passive 125 kHz RFID technology for select HID-compatible proximity readers. The term HID-compatible does not guarantee operation with every HID-branded reader, every multi-technology reader, or every controller connected to an HID reader.
The reader must support the credential technology, and the controller must be configured for the supplied format. Confirm the reader model, controller format, facility code, and credential-number range before ordering.
BT125-W and NBT125-W Reader Compatibility
Nice/Linear states that the BT125-W and NBT125-W readers support Linear 125 kHz cards and fobs. The BT125-W also supports Linear Bluetooth mobile credentials, while the NBT125-W is a physical 125 kHz credential reader.
Both reader models output reader-to-controller data in Wiegand format. Compatibility with the connected access panel still depends on the panel's accepted credential formats and programming.
Published Read Range
Nice/Linear publishes a CLM125-H credential read range of up to approximately 8 inches. Actual performance depends on the reader model, reader power, mounting surface, nearby metal, card orientation, electrical interference, and site conditions.
Current BT125-W and NBT125-W reader specifications publish maximum physical-credential read ranges of up to approximately 3 inches. The completed installation will be limited by the reader and site conditions, so an 8-inch range should not be guaranteed with these readers.
Adhesive-Back Identification Card Support
The CLM125-H supports printable 14 mil CR80 adhesive-back PVC identification cards. These optional labels can be printed separately and applied to the clamshell credential for a cardholder name, photograph, department, company logo, or other approved identification information.
The CLM125-H body is not identified as a direct-print ISO card. Do not run the clamshell card through a standard card printer unless the printer manufacturer specifically approves its thickness and construction.
Adhesive-back cards, card printers, ribbons, badge software, and printing services are not included unless separately listed.
Credential Enrollment
Each CLM125-H card must be enrolled into the access-control database before it can grant entry. Record the facility code and credential number, then assign the card to the correct person and permissions.
- Verify the facility code and credential number.
- Check the existing database for duplicate credentials.
- Add or enroll the card into the access controller.
- Assign the correct cardholder or account.
- Configure authorized doors and access levels.
- Set schedules and expiration dates when required.
- Test the credential at every assigned reader.
- Document the assignment for future replacement or deactivation.
Comparison With Related Linear Credentials
- CLM125-H 830-00420: Standard 26-bit 125 kHz HID-compatible clamshell cards.
- CLM125-H Custom 830-0042C: Custom-format HID-compatible clamshell cards.
- CLM125-A 830-00430: AWID-compatible 125 kHz clamshell cards using a different credential technology.
- ISO125-H 830-00400: Printable ISO-style 125 kHz HID-compatible proximity cards.
- KFB125-H 830-00440: Key-fob-style 125 kHz HID-compatible credentials.
- CLM135-L 830-00470: 13.56 MHz DESFire EV2 clamshell smart cards.
- BT-MOB-L 830-00490: Digital Bluetooth mobile credentials rather than physical cards.
Similar Credentials That Are Not Automatically Interchangeable
- CLM125-A AWID-compatible clamshell cards
- CLM135-L 13.56 MHz smart cards
- Generic 125 kHz proximity cards
- Credentials using another facility code
- Custom-format HID-compatible credentials
- Bluetooth mobile credentials
- NFC smartphone credentials
- Magnetic-stripe access cards
- Cards from another manufacturer with a similar appearance
Features and Specifications
| Specification | Details |
| Brand | Linear / Nice |
| Model | CLM125-H |
| Part Number | 830-00420 |
| Product Type | Clamshell proximity access-control card |
| Credential Technology | HID-compatible 125 kHz RFID |
| Operating Frequency | 125 kHz |
| Credential Format | Standard 26-bit |
| Facility Code | Verify from the current package or supplier record |
| Credential Numbers | Verify before enrollment |
| Package Quantity | 25 cards; verify current package label |
| Published Credential Read Range | Up to approximately 8 inches; actual range is reader-dependent |
| Card Material | ABS plastic |
| Color | Off-white |
| Identification Label Support | Supports printable 14 mil CR80 adhesive-back PVC cards |
| Direct-Print ISO Card | No; use a compatible adhesive-back identification card when printing is required |
| Battery Required | No |
| Reader Compatibility | Select HID-compatible 125 kHz proximity readers |
| Associated Linear Readers | BT125-W and NBT125-W, subject to controller-format verification |
| Communication Format | Wiegand-compliant credential format |
| Part Number Marking | Part number printed on each card |
| Custom-Format Alternative | CLM125-H custom, part number 830-0042C |
| Reader Included | No |
| Access Controller Included | No |
| Enrollment Required | Yes |
Package Contents
- Twenty-five Linear / Nice CLM125-H 830-00420 clamshell proximity cards
A reader, access controller, adhesive-back identification cards, card printer, printer ribbon, wiring, power supply, credential enrollment, controlled hardware, and installation services are not included.
Before Ordering Checklist
- Confirm that the reader operates at 125 kHz.
- Verify that the reader supports HID-compatible proximity credentials.
- Confirm that standard 26-bit format is required.
- Verify the facility code supplied with the package.
- Review the credential-number range for duplicates.
- Confirm that the controller has capacity for 25 additional credentials.
- Use custom part number 830-0042C when another format is required.
- Do not substitute CLM125-A AWID credentials.
- Order compatible 14 mil CR80 adhesive-back cards separately when printed identification is required.
- Document each credential assignment before distribution.
Professional Access-Control Advisory
Credential enrollment and access-level programming should be completed by an authorized administrator or qualified access-control technician. Test each card at every assigned reader and confirm that schedules, access levels, expiration dates, door permissions, and audit records operate correctly.
Immediately disable credentials that are lost, stolen, returned, or assigned to users who no longer require access. Access credentials must not bypass free-egress hardware, emergency release, fire access, mechanical override, or other required life-safety provisions.
Product Questions & Answers
What is included with Linear CLM125-H 830-00420?
The package is identified as containing 25 standard 26-bit, 125 kHz HID-compatible clamshell proximity cards. Readers, controllers, adhesive labels, wiring, and credential enrollment are not included.
Which readers are compatible with CLM125-H cards?
CLM125-H is intended for select HID-compatible 125 kHz readers. Linear BT125-W and NBT125-W readers support Linear 125 kHz cards, but the complete reader and controller configuration must be verified.
Will CLM125-H work with every HID reader?
No. The reader must support the applicable 125 kHz HID-compatible credential technology, and the controller must accept the supplied 26-bit format, facility code, and credential-number range.
What credential format does part number 830-00420 use?
Part number 830-00420 is the standard 26-bit version. Verify the facility code and credential-number range from the package or supplier record before enrollment.
Can CLM125-H cards be printed directly in an ISO card printer?
Not normally. CLM125-H is a thick ABS clamshell credential. Nice/Linear states that it supports printable 14 mil CR80 adhesive-back PVC cards that are printed separately and applied to the credential.
What is the published read range of CLM125-H?
Nice/Linear lists the credential at up to approximately 8 inches, but actual range is limited by the reader and installation. BT125-W and NBT125-W readers publish ranges of up to approximately 3 inches.
Do CLM125-H cards arrive enrolled in the access controller?
No. Each card must be added to the controller and assigned the correct cardholder, doors, schedules, access level, and expiration settings.
What is the difference between 830-00420 and 830-0042C?
Part number 830-00420 is the standard 26-bit CLM125-H package. Part number 830-0042C is the custom-format version for systems requiring another credential configuration.
