If you’ve been running with FarmTRX Yield Monitors for a few seasons or have the system installed across multiple harvesters, you may be wondering: Which model of FarmTRX Yield Monitor do I actually have?
Whether you’re weighing an upgrade, looking for reminders on how to get set up, or troubleshooting, being able to tell which FarmTRX Yield Monitor Electronic Control Unit (ECU) you have on your farm/equipment can help streamline your setup. Here’s a simple, image-supported guide to help you identify your ECU model based on sticker color, connector type, LEDs, and physical features.
Step One: Locate the Yield Monitor ECU.
The ECU mounts inside the combine cab and must be wired into switched 12V power. Choosing where to wire and mount the Yield Monitor “brain box” is largely up to the installer, so take a moment to locate the Yield Monitor ECU in your combine cab. It may be forgotten in a corner beneath the operator chair!
Yield Monitor 1.0
Sticker: Dark blue with an orange band at the bottom
Text: “KNOW MORE – GROW MORE” tagline on label
LED Light: None
Connector: DB15 (15-pin) wide, flat, rectangular metal shell (see reference material at end of article)
Shape: Rectangular, slim
Notes: First-generation ECU, no visual status indicators
Supported? Yes, all previous versions of the FarmTRX Yield Monitor are still supported. This version was likely purchased between 2017 to 2020. Perhaps it is new to you coming already installed on a combine. This unit will capably record and sync yield data but is no longer available for new purchases on the webstore.
Features Limitations:
- Non CAN wiring (serial connection only to Moisture Sensor)
- Slower processor compared to recent generations
- No compatibility with Climate FieldView
- Single band antenna, WAAS only
Yield Monitor 2.0/Base
Sticker: Dark blue
Text: “YIELD MONITOR 2.0” or “YIELD MONITOR” printed on the label
LED Light: One LED for basic status indication
Connector: DB15 (15-pin) wide, flat, rectangular metal shell (see reference material at end of article)
Shape: Rectangular, same form factor as 1.0
Notes: Improved diagnostics via LED; visually similar to 1.0 except label and LED
Supported? Yes, all previous versions of the FarmTRX Yield Monitor are still supported. This version was likely purchased between 2020 to 2022. Perhaps it is new to you coming already installed on a combine. This unit will capably record and sync yield data but is no longer available for new purchases.
Features Limitations:
- Slower processor compared to recent generations
- Single band antenna, WAAS only
Features Introductions:
- Single status LED
- Improved processor
- CAN based wiring/harnesses
- CAN bus port on main harness for FieldView connection
Yield Monitor 3.0/Plus+
Sticker: Orange
Text: “YIELD MONITOR Plus” or “YIELD MONITOR 3.0” printed on the label
LED Light: One LED
Connector: DB15 (15-pin) wide, flat, rectangular metal shell (see chart below)
Shape: Rectangular, same form factor as 1.0 and 2.0
Notes: Enclosure design unchanged
Supported? Yes. The Yield Monitor Plus+ was introduced in 2023 as a higher positional accuracy variant of the Yield Monitor. This unit exists on the FarmTRX webstore (while inventory is available) and is currently the value-minded option for getting reliable yield monitoring and mapping for any combine.
Features Limitations:
- Previous generation enclosure design, less ruggedized and more susceptible to water/dust/environmental affects compared to Pro
- Single status LED
- Single CAN channel
Features Introductions:
- Multi-band GNSS antenna, improved positional accuracy
- Capable of receiving RTK corrections
- Improved processor
Yield Monitor Pro
Sticker: Orange
Text: “Yield Monitor Pro” printed on the label
LED Lights: Four system LEDs for advanced diagnostics
Connector: (see chart below)
- DTM12 Connector – 12-pin round connector round, rugged plastic with bayonet/snap-style lock
- TNC Connector – a small, round, metal RF connector with a threaded coupling ring
Shape: Bulkier, ruggedized housing
Notes: Latest model with upgraded enclosure, improved weather resistance, and multi-LED diagnostics
Supported? Yes.
Features Introductions:
- Free satellite space-based corrections using Precise Point Positioning for every farmer (no set up or configuration needed)
- Improved enclosure design
- 4G cellular modem and improved processing power/RAM
- Multi-CAN channel to record engine/implement bus data
- Multi-LED
Quick Reference Table
| Model | Sticker Color | Label Text | LED(s) | Connector | Shape |
| Yield Monitor 1.0 | Dark Blue + Orange Band | “Know More – Grow More” | None | DB15 | Rectangular |
| Yield Monitor 2.0 | Dark Blue | “Yield Monitor 2.0” | 1 | DB15 | Rectangular |
| Yield Monitor Plus+ | Orange | “Yield Monitor Plus” | 1 | DB15 | Rectangular |
| Yield Monitor Pro | Orange | “Yield Monitor Pro” | 4 | DTM12
TNC |
Rugged/Bulkier |
DB15 Connector
DTM12 Connector (DEUTSCH 12 PIN)
Need More Help?
If you’re still unsure which model you’re using or need help upgrading, reach out to your local FarmTRX reseller or contact to support@farmtrx.com. We’re happy to walk you through it.
Knowing your ECU model helps with everything from app setup to firmware updates, and ensures you’re getting the most out of your harvest data.
