OBD-II ELD: What It Is and How to Pick the Right One
The simplest way to make a truck FMCSA-compliant — no wiring, no mechanic.
An OBD-II ELD plugs into a truck's diagnostic port instead of being hard-wired. ELD Hub supports PT-30 and IOSiX hardware and sells both for $150 per device with free shipping. PT-30 includes a cable; IOSiX is device only. If you already own a compatible PT-30 or IOSiX, keep it and run it on ELD Hub software at $15/truck/month, no contract.
Does the OBD-II ELD work with ELD Hub?
Yes. ELD Hub supports PT-30 and IOSiX hardware and sells both for $150 per device with free shipping. PT-30 includes a diagnostic cable; IOSiX is device only. If you already own a compatible device, we re-register it at no cost. Software is $15 per truck per month with no contract.
Last verified by ELD Hub.
4 quick steps — personal details, company info (USDOT number and time zone required), billing address, done. About 2 minutes.
OBD-II ELD at a glance
| What it is | Plug-in Electronic Logging Device for the OBD-II port |
| FMCSA rule | 49 CFR 395.15 — must be on the FMCSA ELD list |
| Install | Plug in, pair Bluetooth, log in — under 10 minutes |
| Devices ELD Hub supports | PT-30 and IOSiX (both FMCSA-registered) |
| Best for | 1–20 truck fleets and owner-operators |
| Price | PT-30 $150 with cable; IOSiX $150 device only. Free shipping; software $15/truck/month |
- No wiring, no mechanic, no ECM programming — plug in and drive.
- Reads engine miles, engine hours, speed, and RPM through the diagnostic port.
- Automatically detects duty status changes (Driving, On Duty, Off Duty, Sleeper).
- Pairs to the driver's phone or tablet over Bluetooth.
- Both PT-30 and IOSiX OBD-II devices work with ELD Hub — pick either.
- Passes DOT roadside inspection in every state.
Frequently asked questions
Are OBD-II ELDs FMCSA-compliant?
Only if the specific device is on the FMCSA ELD registration list. Both the PT-30 and IOSiX (the two OBD-II ELDs ELD Hub supports) are registered. Not every device sold as 'ELD' on Amazon or eBay is on the list — check the FMCSA list before buying.
What's the difference between an OBD-II ELD and a hard-wired ELD?
OBD-II ELDs plug into the standard diagnostic port under the dash — no tools, no mechanic, driver can install it in 5 minutes. Hard-wired ELDs (older 9-pin/6-pin models on heavy-duty trucks) tap directly into the engine wiring. Both are FMCSA-compliant. OBD-II is easier and cheaper for 1–20 truck fleets.
Which OBD-II ELD should I buy — PT-30 or IOSiX?
Both work with ELD Hub and cost $150 per device with free shipping. PT-30 includes a diagnostic cable; IOSiX is device only. Tell us your truck year, make and model so we can check which fits.
Can I use any OBD-II adapter as an ELD?
No. A generic OBD-II scanner or Bluetooth dongle is not an ELD. To be legal for HOS logging under 49 CFR 395, the device must be on the FMCSA ELD registration list and paired with a compliant app. That's why we sell PT-30 and IOSiX hardware rather than generic adapters.
Does an OBD-II ELD work on heavy-duty trucks?
Yes, but you need the right cable. Class 7–8 trucks use a 6-pin or 9-pin round diagnostic connector instead of the flat OBD-II connector on light-duty vehicles. Every $150 PT-30 order includes the correct cable for your truck's year and make at no extra charge.
How much does an OBD-II ELD cost per month?
ELD Hub software is $15/truck/month with no contract and includes HOS, DVIRs, IFTA and the dispatcher dashboard. Hardware is separate: PT-30 or IOSiX costs $150 per device with free shipping. PT-30 includes a cable; IOSiX does not.
Start in 60 seconds
$15/truck/month. No contract. FMCSA-registered ELD you can activate today — and it starts with a 14-day free trial.
- FMCSA-registered
- 5-minute setup
- Keep your PT-30 / IOSiX
- Cancel anytime
4 quick steps — personal details, company info (USDOT number and time zone required), billing address, done. About 2 minutes. Month-to-month — cancel anytime.