Geotab IOX-OUTPUTM: What It Does, Specs and Uses

What Is the IOX-OUTPUTM?

Most IOX modules bring information into a Geotab GO device. The IOX-OUTPUTM works in the other direction. It is an IOX expansion module with a single relay driver output, which lets the GO device energize a relay coil on command. That relay can then switch a light, a buzzer, a door lock circuit or an input on another device.

The output is set in MyGeotab to activate when a defined condition is met, and Geotab also provides an SDK Add-In that turns it on and off manually for testing. One IOX-OUTPUTM is supported per GO device, and it drives one relay.

The IOX-OUTPUTM laid out as a schematic: the module and connector, the cable to its 2-pin plug, the white output wire for a relay coil and the black ground with its ring terminal.

What Does the IOX-OUTPUTM Do?

Switches one relay. A white output wire drives the coil of a 12 V or 24 V relay, and the relay contacts carry the actual load.
Reacts to MyGeotab conditions. The relay can be triggered when a condition configured in MyGeotab is met.
Sends commands to other hardware. Fleet managers can use it to signal sensors or third-party devices from MyGeotab.
Test Add-In. Geotab's sample Add-In on its SDK repository switches the output on and off to confirm the wiring works.
Fits the relay kit. Geotab lists it as compatible with the SPR-RELAYKIT for the relay side of the install.

What Do Fleets Use the IOX-OUTPUTM For?

In-cab warning lights. An LED on the dash can light up to warn a driver of a condition, such as a road hazard or an upcoming inspection station, which Geotab gives as an example.
Arrival cues for delivery routes. Tied to zone rules, the relay can turn on a light or buzzer as a driver nears a delivery location.
Engine fault warnings. Geotab describes activating an emergency light when the GO device detects a critical engine fault, so the driver knows to pull over.
Remote door lock and unlock. The relay can trigger a door lock circuit, useful for shared or unattended vehicles.
Dash cam event tagging. Wired to an input on a dash cam, the relay can tag a frame or clip when a MyGeotab condition occurs, linking video to telematics events.
External buzzers and sirens. Audible feedback beyond the GO device's own beeper, driven through the relay.

Can the IOX-OUTPUTM Immobilize a Vehicle?

Fleets often ask whether this module can stop a vehicle from starting. Geotab's documentation states the IOX-OUTPUTM is not designed to be fail-safe and is not recommended for safety-critical applications, and that it does not replace a vehicle's own safety systems. Geotab has also said in its community that it does not support relay control for immobilization. We follow that guidance and do not wire this module into starter or ignition circuits. Fleets that need to restrict who can drive should look at the NFC reader with its relay kit or Geotab's keyless offerings, configured as Geotab documents them.

What Are the IOX-OUTPUTM's Key Specifications?

Spec	Detail
Outputs	1 relay driver (white, OUTPUT1) plus ground (black, GND_OUT)
Relay voltage	12 V or 24 V
Relay coil impedance	Over 80 Ω at 12 V; over 160 Ω at 24 V
Maximum relay current	150 mA
Current draw	40 mA typical, 100 mA maximum operating; 0.4 mA sleep
Wire connectors	Molex 2-pin 43640-0200; TE ring terminal 326875 on ground
Interface	CAN at 500 kbps for daisy chaining
Overall length	1140 mm
Weight	42 g
Operating temperature	-40 °C to +85 °C
Compatibility	GO7 and newer; Base, Pro, ProPlus and Regulatory plans; one per GO device

What Should Installers Know About the IOX-OUTPUTM?

The IOX-OUTPUTM does not power a load directly. Its white wire sinks a relay coil, with the other side of the coil on battery positive, and the relay's contacts handle the device being switched. Coil choice matters: roughly 80 ohms for a 12 volt vehicle and 160 ohms for 24 volt, so the output stays under its 150 mA limit. The black ground goes to chassis with the ring terminal, and Geotab's install guide shows a self-tapping screw into the metal dash frame. Geotab requires a certified or equally qualified installer. The GO device is unplugged before anything connects, the IOX is plugged in before power up, and the module is kept inside the cab since it has no IP rating. We test the relay with Geotab's Add-In before handing the vehicle back.

A typical OUTPUTM circuit: the white wire sinks the relay coil, the relay contacts carry the actual load, and grounds land on the metal dash frame, never on starter or ignition wiring.

Who Is the IOX-OUTPUTM Right For, and Who Should Choose Something Else?

This module fits fleets that want MyGeotab to make something happen in the vehicle: a light, a buzzer, a lock or a dash cam tag. It is a single output, so fleets needing several switched circuits will need another approach. It does not read anything; for monitoring equipment such as PTO or doors, the IOX-AUXM is the right part. It is not a security immobilizer, and we will not present it as one.

What Are Common Questions About the IOX-OUTPUTM?

Can it run a light bar directly?

No. The output is rated for a relay coil at up to 150 mA. The light bar is powered through the relay contacts, which are sized for that load.

How do we know it works after install?

Geotab offers an SDK Add-In that toggles the output on and off from MyGeotab. We use it to confirm the relay clicks and the load responds.

Can we use two of them for two relays?

Geotab's marketplace states that one IOX-OUTPUTM is supported per GO device, with one relay. We can supply and install it and help plan which single function gives the most value.

If a relay output fits your plan, API Signal supplies the IOX-OUTPUTM and relay, wires the circuit at your yard, and proves it with Geotab's test Add-In before we leave. Phone 803-513-1009 or fill out Get a Quote to book it.

Sources: Geotab IOX-OUTPUTM support document; Geotab Marketplace IOX-OUTPUTM listing; Geotab IOX-OUTPUTM install guide; Geotab guide to IOX add-ons. GEOTAB is a registered trademark of Geotab Inc. API Signal is an independent installer and is not Geotab.

Every Geotab Product →Trackers, cameras, asset trackers and IOX add-ons. Get a Quote →The IOX-OUTPUTM supplied and installed on one written quote.

Geotab IOX-OUTPUTM