Support Document

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IOX-WRKS is an all-new Geotab® engineered Public Works solution with a focus on vehicles in the winter operations space and their unique telematics requirements. This solution works with a host of substance spreader controller makes and models. Multiple inputs connect with onboard sensors to read sensor data such as road temperature and plow position and pushes this data to the Public Works Add-In in MyGeotab™.


  1. Monitor over 20 different material spreaders
  2. Temperature (road and air)
  3. 4 inputs with up to 8 inputs with the addition of an IOX-AUXM
  4. Built-in 1 GND and 3 active high +Ve inputs
  5. Expansion of 4 self learning inputs with GND–Float, GND–Driven, and Float–Driven circuits.

IOX hardware technical specifications


220 g


Overall length: 2350 mm

Widest point: 47 mm W × 15 mm H


Polycarbonate (PC) thermoplastic two-piece housing.


CAN0: 500 kbps (for daisy-chaining)

CAN1: Speed depends on the customer application (for external device/sensor, not terminated)

Primary Comm port: Speed depends on the customer application (Male, DTE)

Secondary Comm port: Speed depends on the customer application (Female, DCE)

Outputs Available

IGN_BATT: 12V/24V relay of input voltage of GO™ device

OUT0: Open drain output with latching function, default drain

Outputs Current

IGN_BATT: Current limit at 650 mA

Inputs Available

AUX5, AUX6, AUX7, AUX8 - AUX1, AUX2, AUX3, AUX4 (Only available with the addition of the IOX-AUXM)

Nominal Input Voltage

12 V / 24 V


Input Impedance of each AUX: 30.3 kΩ to 37 kΩ

Driving Circuit Resistance must be less than 100 Ω

Input Logic Levels

For AUX:

AUX5 — Ground input

AUX6, AUX7, AUX8 +12/24 V input

AUX1, AUX2, AUX3, AUX4 — available with IOX-AUXM

Current Rating

570 mA at 12 V / 24 V Operating mode (max. current draw)

0.800 mA at 12 V / 24 V Sleep Mode

Temperature Rating

−40 ℃ to +61 ℃


Male Comm Port (4-wire)

Female Comm Port (2-wire)

10-pin Molex Connector:

    1. CAN1
    2. OUT0
    3. AUX5 — AUX8
    4. IGN_BATT and GND
    5. Mini-USB (for daisy chain)

  • Installation

    Male Mini-USB connector connects to the GO device or another IOX harness

    Compatible Devices

    GO9® and GO9+™

    Max. Total IOX Current in Daisy Chain

    Daisy Chaining: 2.75 A @ 12 V/24 V

    NOTE: For each IOX in the Daisy Chain, add the Max Current draw, and do not exceed the Max.Total IOX draw current.

    IOX installation instructions

    ! IMPORTANT: Professional installation (Certified Geotab® Installer or equivalent) is required for the safe and proper installation of this product (harness and/or IOX). The installer must have sufficient technical knowledge and expertise for the respective installation.

    WARNING! Always read and follow all safety information, including Important Safety Information and Limitations of Use, before harness and/or IOX installation. Disconnect the GO device from the vehicle before installation and connect it post-installation (see Failure to follow these instructions and warnings can result in loss of vehicle control and serious injury or vehicle damage.

    Installing the IOX-WRKS


    Unplug the GO device from the vehicle and remove the IOX expansion port cover on your GO device.


    Plug the 90° USB connector from the IOX-WRKS into the GO device and then secure the USB connector using a zip tie. Do not overtighten the zip tie, as this can damage the USB connector.

    NOTE: Insert the USB connector in the orientation displayed in the image.


    To interface with Material Spreaders or Temperature Sensing equipment, use the primary port. The secondary DB9 port is only used to connect a temperature device when the primary port is connected to a controller.

    Spreader integration documentation is available here.


    To interface with Parker, Muncie, Genesis, and Marwis systems, use the CAN bus connection.

    Spreader integration documentation is available here.


    Connect telemetries from the vehicle to the inputs (labeled AUX 5 to AUX 8) on the IOX-WRKS, following the required input mapping. If more than four inputs are required, an additional IOX-AUXM can be added for AUX 1 to AUX 4. Do not cut the loop if adding this cable.

    The inputs are color-coded as the following:

    1. AUX 1 or 5 = Blue
    2. AUX 2 or 6 = Orange
    3. AUX 3 or 7 = Green
    4. AUX 4 or 8 = White
    5. IGN_BATT = Red-White
    6. GND = Black

      The IOX-WRKS receives its power from the GO device. Connecting the IGN_BATT or GND wires on the IOX-WRKS to vehicle power can result in damage to the IOX-WRKS and the GO device, and may void the warranties of both.

      The purpose of the IGN_BATT and GND wires on the IOX-WRKS is to provide a convenient power connection point (power OUT) for external sensors, such as plow or spreader sensors. Click here for more details.

      IGN_BATT and GND are available to provide power/ground to sensors (650mA max load). Do not connect to vehicle power or ground!

      Required input mapping:

      1. AUX 5 (GND input) — Belly plow or manual spreading
      2. AUX 6 (+12/24 Ve input) — Front plow
      3. AUX 7 (+12/24 Ve input) — Wing plow
      4. AUX 8 (+12/24 Ve input) — Tow plow or Beacon
      5. AUX 1 to 4 — Available with additional IOX-AUXM
      6. Solder all connections, and insulate with heat-shrink or tape. Corrosion resistance is critical in winter operation conditions. Please complete all precautions to ensure equipment and connections have adequate corrosion resistance. Additional documentation for sensor and sensor mounting can be found here.

        ! IMPORTANT: The input must be active when the monitored equipment is in operation — for example, when the plow is down = 12 V.

        If the IGN_BATT wire is used, you must tell this to Geotab Support in Step 8 below.

  • 5

    Connect any additional IOX cables and daisy chain them together using the termination shunts. The termination resistor must remain in the shunt of the last cable. Once all IOX cables are connected to the GO device, plug in the GO device and immediately start the vehicle. The GO device enters debug mode — indicated by six short beeps. Please allow 3 to 5 minutes for the device to wake, establish connectivity, and update firmware before proceeding to the next step.


    Once the device is ready — the red, green, and blue LEDs are solid and the device is no longer beeping — configure the IOX-WRKS, and test all data and telemetry inputs.


    NOTE: The IOX-WRKS will not function until a material spreader specific configuration is loaded. The configuration can be loaded on the Spreader Add-in page (Client approval is required). Alternatively, you can contact support for this process, and also to verify data flow and telemetry to complete the install.

    ! IMPORTANT: If the IGN_BATT wire was used in step 4 above, enable it on the Spreader Add-in page if the firmware on IOX-WRKS is v24 or newer. You can also inform Geotab Support of this information so they can enable this wire with an extra command (Provisioning Step 12).

    Geotab Public Works / Winter Solution support: 1-800-984-6175, Monday to Friday, 7:30am - 8:00pm Eastern Time. Saturday (support is on-call, request must be confirmed in advance by email before Thursday midnight, please plan accordingly.) 11:00am - 7:00pm Eastern Time.

    Public Works Support will assist you in setting the spreader controller configuration.

    After a spreader configuration has been successfully set, set the material spreader into SIM/Operation Mode as described in the spreader-specific documentation. Trigger and verify each input one at a time with support.


    Once the locators have been properly tested and configured, ensure all cables are safely secured with a cable tie, place the dash panels in their original positions, and clean the cab so it is ready for the customer.

    NOTE: If the device is not communicating, please ensure the device is installed correctly and then try again.

    Termination shunt

    The IOX comes with a termination shunt installed in the expansion port. If you plan to install more than one IOX in a daisy chain, you must remove the shunt from each device in the line, with the exception of the last IOX, where the shunt must be kept in place and secured with a zip tie.

    NOTE: Failure to install the shunt in the last IOX may affect IOX communication.

    Important safety information and Limitations of Use

    For the latest version of the Limitations of Use, visit:

    WARNING! Do not attempt to install, configure, or remove any product from any vehicle while the vehicle is in motion or otherwise in operation. All installation, configuration, or removal must be done only in stationary vehicles which are securely parked. Attempting to service units while being operated could result in malfunctions or accidents, leading to death or serious personal injury.

    WARNING! All in-vehicle devices and related cabling must be securely fastened and kept clear of all vehicle controls, including gas, brake and clutch pedals. You must inspect devices and cabling on a regular basis to ensure all devices and cabling continue to be securely attached. Loose cabling or devices may impede the use of vehicle controls, resulting in unanticipated acceleration, braking or other loss of vehicle control, which could lead to death or serious personal injury. Improperly fastened in-vehicle devices may detach and impact operators upon sudden acceleration or deceleration, which may cause injury.

    WARNING! If at any point after an in-vehicle device is installed a warning light illuminates on the vehicle dash or the vehicle stalls or has a marked drop in performance, shut off the engine, remove the device, and contact your reseller. Continuing to operate a vehicle with these symptoms can cause loss of vehicle control, and serious injury.

    WARNING! Your in-vehicle devices must be kept clear of debris, water, and other environmental contaminants. Failure to do so may result in units malfunctioning or short-circuiting that can lead to a fire hazard or vehicle damage or serious injury.

    WARNING! Do not attempt to remove the devices from the vehicle in which they are originally installed for installation in another vehicle. Not all vehicles share compatibility, and doing so may result in unexpected interactions with your vehicle, including sudden loss of power or shutdown of the vehicle’s engine while in operation or cause your vehicle to operate poorly or erratically and cause death or serious injury and/or vehicle damage.

    NOTICE: This product does not contain any user-serviceable parts. Configuration, servicing, and repairs must only be made by an authorized reseller or installer. Unauthorized servicing of these products will void your product warranty.

    Regulatory statements


    CAN ICES-003 (A) / NMB-003 (A)


    This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

    NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.


    Wir besitzen keine Versand- und Lagerfläche in Deutschland und sind nicht von der Rücknahmepflicht nach § 17 ElektroG betroffen.