RFID Key Fobs Writable 26 Bit Proximity Key Fobs Grey (50 pcs)

In this review the reviewer tested the writable 26 bit RFID key fobs intended for commercial access control use and found them best suited for integrators and facilities managers who need a bulk, low-frequency replacement or spare set. The bottom line: these 125kHz WG26 format fobs are practical, inexpensive and straightforward to deploy with compatible Prox 26-bit readers, and their rewritable nature makes them useful for staging and reprogramming access without buying single-use tags.

Key Features

• 26 bit H10301 format: Uses the standard WG26 location and bit format so it works with most 125kHz prox readers that expect a 26-digit keyfob.
• Rewritable low-frequency chip: The fobs are readable, replicable and rewritable which lets installers reprogram tags during commissioning or when repurposing credentials.
• Wide reader compatibility: Compatible with many Prox series readers listed for ISO-Prox 1346/1386/1326 formats, reducing compatibility checks for common access systems.
• Bulk pack for operations: Supplied as a pack of 50 grey key fobs which is convenient for medium-sized sites needing multiple spares or replacements.
• Fixed factory serials: Serial numbers are pre-set at the factory which streamlines inventory but removes the option to alter the UID after delivery.

Who It's For

These key fobs are aimed at security installers, facility maintenance teams, and property managers who already run 125kHz WG26 based access control systems and need a cost-effective, bulk source of replacement or spare credentials. The writable nature helps when programming batches of tags during initial setup or when converting temporary credentials to permanent ones.

If you operate a high-frequency 13.56MHz system, specialized smart cards, or require changeable hardware IDs post-delivery, these low-frequency H-ID fobs are not a match. Also, individual consumers who only need a single spare badge may find smaller pack sizes more convenient elsewhere.

Pros & Cons

Pros

• Standard WG26 26-bit format ensures compatibility with many Prox readers used in commercial installations.
• Rewritable low-frequency tags allow reuse and reprogramming during commissioning or turnover.
• Bulk packaging of 50 fobs makes stocking and deployment efficient for facilities teams.

Cons

• These are low-frequency 125kHz H-ID cards only and will not work on 13.56MHz readers or non-H-ID formats.
• Factory-fixed serial numbers cannot be changed after shipping, which limits flexibility for some advanced use cases.

Specifications

Product name	RFID Key Fobs Writable 26 Bit
Format	H10301 / WG26 26-bit
Frequency	125kHz low frequency
Compatibility	ISO-Prox 1346, 1386, 1326 and many Prox readers
Package	50 pcs grey key fobs
Serial numbers	Fixed at factory (pre-set)
Common codes	Location number 98 or 99; WG26 standard

Our Verdict

For sites that run 125kHz WG26 based access control systems these writable 26 bit key fobs offer straightforward compatibility, bulk value and the practical advantage of rewritability during setup or turnover. They are a sensible, economical choice for installers and facility managers who need many spares, but they are not suitable for high-frequency systems or use cases that require post-shipment UID changes.

Frequently Asked Questions

Will these fobs work with any reader?
They work with readers that accept the 26-bit H10301 WG26 format and 125kHz low-frequency tags; check your reader model for WG26 or 26-bit prox compatibility.

Can I change the serial numbers?
No, the serial numbers are fixed at the factory and cannot be altered after shipping.

How many fobs come in a pack?
This listing supplies 50 grey writable 26-bit key fobs per package.