HID 1346 ProxKey III 125 kHz Proximity Keyfob (26-Bit H10301) — Chicago Commercial Credential
Model / Series: 1346 ProxKey III
Battery-free 125 kHz HID proximity key fob in 26-bit H10301 format — the standard replacement fob for buildings still running legacy HID Prox readers.
We don't just ship boxes — this goes in as part of our access control installation in Chicago work. From the Loop to Rogers Park — see our security work across Chicago.
Specifications
- Brand
- HID Global
- Series
- HID Proximity
- Model
- 1346 (ProxKey III)
- Form Factor
- Pocket-size keyfob (key ring / badge clip / lanyard compatible)
- Frequency
- 125 kHz proximity
- Format
- 26-bit H10301 (most common 125 kHz proximity format; open format)
- Facility Code Range
- 0–255
- Number Range
- 0–65,535
- Construction
- Durable ABS
- Power
- No battery — infinite number of reads
- Compatibility
- HID-readers and most Wiegand-compatible third-party panels (e.g., HID multiCLASS SE, Schlage 7610, Identiv 4080 / 4082, Brivo / Paxton / Genetec / Lenel / Software House panels accepting Wiegand 26)
Best Fit & Recommended For
HID 1346 ProxKey III 125 kHz Proximity Keyfob (26-Bit H10301)
The HID 1346 ProxKey III is the legacy-standard 125 kHz proximity keyfob from HID Global — the credential most-installed at Chicago commercial properties before the migration to 13.56 MHz smart cards. Built into a durable ABS keyfob shell that easily attaches to a key ring, badge clip, or lanyard, the ProxKey III is battery-free (no battery means an infinite number of reads over the credential’s lifetime), and it programs with the 26-bit H10301 format — the most common 125 kHz proximity format and an open format, meaning HID and competing manufacturers can both encode credentials compatible with most Wiegand-26 readers.
What’s Confirmed by the Official HID Spec
These specifications come directly from HID Global’s published product page for the 1346 ProxKey III:
- Frequency: 125 kHz proximity
- Format: 26-bit H10301 (HID’s standard open 125 kHz proximity format)
- Facility Code Range: 0–255
- Number Range: 0–65,535
- Construction: Durable ABS, key-ring compatible
- Battery: None — infinite number of reads
- Designed: To withstand harsh operating environments and handling
- Compatible products (per HID): Schlage 7610, Identiv 4080 / 4082, and most other Wiegand-26 access control readers and panels
Why 125 kHz Prox Is Still Specified in 2026
For new commercial installations, modern smart-card credentials (HID iCLASS 2050, HID Seos 5266, Schlage MIFARE) are the preferred choice — encrypted authentication, higher security, and migration-ready ecosystems. But there are real situations where the ProxKey III remains the right pick:
- Installed-base maintenance — properties already running 125 kHz HID Prox systems where the existing readers, panels, and credential database are committed to 26-bit H10301 for years to come
- Multi-tenant residential portfolios with legacy Prox card / fob populations across many buildings — replacing fobs (rather than the entire system) keeps the existing infrastructure working
- Multi-technology readers like the HID multiCLASS SE RP40 read both 125 kHz Prox AND 13.56 MHz smart cards simultaneously — properties undergoing a phased migration issue ProxKey III credentials to legacy users while new staff get smart credentials
- Budget-conscious deployments where the lower per-fob cost of 125 kHz Prox is meaningful relative to the security threat model of the property
Where the HID 1346 ProxKey III Wins in Chicago
- Chicago commercial offices on installed-base 125 kHz HID Prox systems
- Multi-tenant residential properties with legacy HID Prox card / fob populations
- Property management portfolios standardizing on 26-bit H10301 across multiple buildings
- Industrial / warehouse personnel-door access on existing Prox systems
- Medical and dental offices replacing lost fobs on existing Prox readers
- Hospitality back-of-house keyfob access
- Retail back-of-house manager and stockroom keyfobs
- HOA building entries with budget-conscious legacy-Prox credential populations
Local Chicago Coverage
Vidimost installs and supplies the HID 1346 ProxKey III across the full city of Chicago for legacy-Prox installed-base maintenance and budget-conscious 125 kHz keyfob deployments.
Recommended Pairings
- HID iCLASS 2050 Keyfob — 13.56 MHz smart-card alternative for properties migrating off 125 kHz Prox
- HID Seos 5266 Keyfob — high-security 13.56 MHz smart-card credential
- HID multiCLASS SE RP40 — multi-tech reader supporting both 125 kHz Prox AND 13.56 MHz simultaneously (standard upgrade path for phased migrations)
- HID ProxPoint Plus 6005 — basic 125 kHz Prox reader for ProxKey III credentials
- HID ProxPro 5355 — outdoor 125 kHz Prox reader
Professional Installation by Vidimost
Vidimost LLC supplies and installs HID 1346 ProxKey III credentials across Chicago for installed-base 125 kHz Prox systems. Full-scope service includes site walkthrough, facility-code and number-range coordination with the existing access platform, credential programming (or coordination with the manufacturer’s pre-encoded program), and deployment to authorized users. Contact us for a free site walkthrough and quote.
Frequently Installed Together
HID Global
HID iCLASS 2050
13.56 MHz iCLASS smart-card key fob with encrypted authentication — the step up from cloneable 125 kHz Prox fobs on iCLASS-compatible readers.
View →HID Global
HID Seos 5266
HID's high-security Seos key fob — 128-bit AES encryption on an EAL 5+ chip, for doors where card cloning is a real risk.
View →HID Global
HID ProxPoint Plus 6005
Compact mullion 125 kHz Prox reader — the cheap like-for-like swap when a legacy reader dies and every existing fob has to keep working.
View →HID Global
HID ProxPro 5355
Standard-wall 125 kHz Prox reader on a single-gang box — swaps in for a failed unit while the building's existing fobs stay in service.
View →HID Global
multiCLASS SE RP40
Standard-wall reader for buildings moving off 125 kHz Prox — old fobs and new iCLASS SE / SEOS cards both read at the same door.
View →