Answering the question most fleet managers and independent drivers have: which ELD device best fits a trucking setup? This guide compares five reputable options for trucks, highlighting who should buy each and why. Suitable for owner-operators, small fleets, and carriers, these devices cover a range of ports, connectivity, and subscription models. The following summary table helps you compare at a glance.
| Product | Best For | Key Consideration |
|---|---|---|
| Garmin eLog | Vehicles with J1939/J1708 ports; FMCSA compliance | No OBD-II compatibility; extra cable may be needed for Volvo 16-pin J1962 |
| PT30+Cable Bundle | Any ELD/HOS app user needing J1939/J1708/OBD-II | Broad port support; requires compatible app |
| My20 ELD | Cost-conscious fleets using smartphones | Subscription required for service |
| PT30+Cable Bundle TT ELD | Volvo trucks and heavy-duty fleets | Specifically noted compatibility with Volvo devices |
| IOSix HOS Logbook | HOS app users needing built-in connectors | Requires compatible app ecosystem |
Garmin eLog ELD: No-Subscription FMCSA Compliance

The Garmin eLog provides a simple, one-time purchase solution with FMCSA-compliant HOS recording. It supports 9-pin J1939 and 6-pin J1708 diagnostic ports, making it a strong fit for trucks with those connectors. It is not compatible with OBD-II (SAE J1979). A Volvo engine with a 16-pin J1962 connector requires a separate cable not included. Best for fleets that rely on dedicated diagnostic ports and want a subscription-free option.
Best for: Operators who want an FMCSA-compliant ELD with no ongoing fees and standard heavy-duty diagnostic ports. Choose this if your truck wiring uses J1939/J1708 and you prefer a straightforward, one-time purchase. Caution: Volvo 16-pin J1962 ports require additional hardware.
PT30+Cable Bundle: Flexible Ports and Apps

This bundle supports J1939 and J1708/J1587 as well as OBD-II, and reads engine diagnostics data. It works with any compatible ELD/HOS app. Best for fleets needing multiple port compatibility and flexibility in choosing an app platform. Limitation: effectiveness depends on a matching app ecosystem and hardware compatibility.
Best for: Mixed-port fleets or operators who want broad compatibility across diagnostic ports and app options. Consider this if you anticipate needing OBD-II support in addition to J1939/J1708.
My20 ELD: Smartphone-Driven FMCSA Compliance

The My20 ELD emphasizes affordability by using a smartphone app (My20) with standard 9-pin J1939. An adapter is needed for OBD-II or 6-pin ECM ports. A subscription is required, typically prepaid annually. Best for budget-conscious drivers who already prefer managing ELD data via a mobile app. Caution: ongoing costs apply due to subscription model.
Best for: Small fleets or owner-operators who want low upfront costs and are comfortable with a mobile app-based ELD. Avoid if you want a completely hardware-based, upfront-price solution with no ongoing fees.
PT30+Cable Bundle TT ELD: Volvo-Ready Bundle

Designed for Volvo trucks, this bundle emphasizes compatibility with Volvo devices and the TT ELD ecosystem. Best for operators running Volvo heavy-duty fleets who need reliable port compatibility and a turnkey bundle. Limitation: dependency on Volvo-specific compatibility should be confirmed with vehicle wiring before purchase.
IOSix HOS Logbook Device: Built-In Connectivity

The IOSix HOS Logbook integrates built-in connectivity with a 9-pin green connector and supports a comprehensive HOS app. It features WiFi and Bluetooth, plus GNSS with a high-gain antenna for location accuracy. Best for drivers who want flexible wireless capabilities and built-in logging without a separate dongle. Limitation: relies on compatible HOS app ecosystem for full functionality.
Buying Guide: Key Purchase Considerations
- Connector compatibility: Verify your vehicle’s ECM ports (J1939, J1708, J1962, or OBD-II) before choosing an ELD device.
- Subscription model: Decide if you prefer a one-time purchase with no ongoing fees or if a monthly/annual subscription fits your budget and data needs.
- App ecosystem: Some ELDs rely on companion apps; ensure the app supports your workflow, dispatch needs, and reporting requirements.
- Vehicle weight and wiring: Heavy-duty trucks may require specific cables or adapters to interface correctly with the ELD device.
- Portability vs. built-in: Consider whether you want a portable device, a fixed device, or a device with built-in connectivity options like WiFi/Bluetooth.
- Offline storage: For areas with limited connectivity, offline data storage and reliable syncing are important.
- Diagnostic capabilities: If you need engine diagnostics data, check port coverage and data depth (J1939/J1708/OBD-II).
FAQ
- What is the main benefit of an FMCSA-compliant ELD?
It ensures Hours of Service data is recorded according to federal requirements and can be audited by regulators. - Do all ELDs require a subscription?
No. Some options are hardware-based with a one-time purchase, while others rely on ongoing service plans. - Which ELD is best for Volvo trucks?
Bundles labeled as Volvo-compatible or Volvo-focused kits are designed for Volvo wiring and ports. - Can I use OBD-II with these ELDs?
Some support OBD-II via adapters, while others require dedicated J1939/J1708 ports; check your vehicle’s ports first. - Is portable vs. fixed ELD important?
Portable units offer flexibility across vehicles; fixed systems may provide easier installation and stable mounting. - How do I choose if I need a built-in app?
If you prefer a phone-based workflow, apps like My20 provide convenience but require ongoing subscriptions.