This page lists all of the OneGauge features and explains how they are purchased and used. For specific screw terminal numbers and installation details, please visit the Sensor Links page, the OneGauge Sensor List, or the OneGauge Installation Instructions


Below is a complete (to date) list of features that OneGauge includes or features that can be added to a standard setup.
Keep in mind, we are constantly improving the OneGauge setup and adding features, and we may have forgotten something- please reach out if a feature you need is not on this list!

  • Digital hub/computer provides accurate and fast sensor readings
  • Off-the-shelf, inexpensive components for easy future upgrade or replacement
  • Screw terminals on the hub allows you to easily add sensors in the future
  • No programming or technical knowledge required to install or operate your gauges
  • One-on-one customer service to answer any and all questions
  • Custom cluster mounting and installation options available by request
  • Multiple sensor options to work with any engine
    • OBDII support for 1996+ vehicles – read all the sensors monitored by your ECU
    • Individual sensors available (see full list below) so the setup can be installed on anything, including carbureted and OBD-I vehicles.
    • CAN-BUS support for aftermarket or standalone ECUs or data-logging applications
      • We currently support Haltech, Motec, MaxxEcu, AEM, Link, Motorsports Electronics (ME), MegaSquirt, Hondata, and more ECUs or EFI systems. We typically work ‘by request’ and add support for new ECU’s when requested by a customer.
      • We also support Edelbrock Pro-Flo 4, Holley, and FiTech EFI systems.
  • Variety of display capabilities
    • Use your own phone or tablet to display your gauge readings and log data without modifying your dash
      • For best results, we recommend the Torque or Real Dash apps on Android devices, but OneGauge can work with any app
    • Totally customizable LCD touchscreens with sizes available from 2″-10″ to fit any dash or custom setup
      • Design a completely custom gauge layout and design using our LCD screens
    • Warning lights or numbers can be custom programmed to match your needs
    • Replace turn signal, emergency brake, check engine light, and other indicators can be replaced with on-screen icons or lights
    • Add buttons, switches, or other controls to change the look and feel of your screen, toggle between pages, etc.
    • Options for custom programmed relays for fans, lights, or other electronics based on sensor readings
    • LCD screen brightness adjustments on screen or using a dimmer switch
  • Support for just about any sensor imaginable
    • Temperature, Pressure, Vacuum/Boost, Fuel level, Ethanol content, Oxygen/AFR, Voltage, Tachometer, and many more
    • GPS speedometer requires no physical connection and adds compass, altitude, and location options
    • Odometer, hour meter, and trip distance options available with a GPS connection
    • Vehicle roll/tilt or g-force measurements
    • Various data logging options
    • Tire pressure and temperature monitoring systems
    • Proximity sensors available for parking, collision detection, object avoidance, etc.
  • Lap timing and race features like 1/4 and 1/8 mile times, custom or pre-set track lap times, fuel mileage calculations, etc.
  • The setup can be customized when built to fit nearly unlimited numbers of sensors of any type
  • If you can dream it, we can probably build it! Reach out to with questions or requests!


OneGauge Hub internals

The OneGauge Hub is the “brain” of the OneGauge setup- it receives all of the sensor data and sends it to your selected screen. OneGauge is based on the popular Arduino platform, which makes it easy and very inexpensive to replace components in the future. Screw terminals are provided so that sensors can easily be added by the user.

This Hub allows you to install the OneGauge system not only in modern vehicles with OBDII capabilities, but also in older, pre-OBDII carbureted or EFI vehicles. We are excited about a product that is essentially universal- the generic sensors used with OneGauge can be installed on anything with an engine- car, truck, boat, ATV, etc.

A standard hub supports 3 analog temp sensors, 2 fuel level sensors, 1 analog pressure sensor, 5 digital pressure sensors (including vacuum/boost), 2 oxygen sensors, 3 voltage inputs, 1 RPM/tach input, 8 high temperature sensors, and various other optional features like a GPS speedometer, accelerometer for vehicle roll/tile or g-force readings, SD card data logging, a permanent storage device for Odometer/trip/hour readings, CAN-BUS communication with various devices like TPMS systems, 2 LCD screen outputs, and more. All of these can be custom configured when order to suit your needs.

OneGauge data on the Torque App

Every OneGauge hub includes wireless bluetooth communication with an Android phone or tablet running the Torque Pro or RealDash apps. Torque provides the easiest way to set OneGauge up and read your sensors, but is limited to Android devices. To expand OneGauge’s capabilities, you can:

  • Run Torque Pro or RealDash on a second Android phone/tablet
  • Add an OBD adapter to use other apps on Apple and Android devices. This adapter provides a female OBDII port, just like a modern OBDII equipped vehicle, so you can plug in a standard bluetooth OBD reader.
  • Add one or two OneGauge LCD touch screens that display your data. These screens can be customized and allow the addition of buttons and relays for other electronics in the vehicle. For more on touch screen options, see below.
OneGauge Hub

Each OneGauge is housed in a protective box that shields it from the environment. Three options are available for boxes:

  • No box included- great if you plan on mounting in your own housing.
  • Standard ABS plastic box- a standard black box, ideal for mounting in high-heat areas like under the hood. No holes are drilled for wiring so you can drill and adjust the box as needed.
  • OneGauge box- a custom molded box built for OneGauge setups. Currently these are not made to withstand engine temperatures, so we only recommend mounting them inside the vehicle.

If you need special features like waterproofing, please reach out to us to discuss.


OneGauge data displayed on Torque app

Torque Pro, an app available on Android phones and tablets, is the simplest and most cost-effective way to view your gauges. Check out the app here on Google play or read an in-depth review with a list of features here.

We have also recently added support for RealDash, a similar app that has even more options for creating and customizing custom dashboard layouts and add elements like indicator lights, toggle switches, etc.

Torque and RealDash not only include the ability to customize your gauge layout and design, but you can overlay your gauges on top of other apps (like maps or your camera), log the data output by your sensors for later analysis, measure 0-60 and 1/4 mile times, and much more.

OneGauge can be made to work with Apple devices, but due to slower communication with Apple products you may see delays with fast-changing sensors like RPM and speed. We recommend OBD Fusion or Engine Link apps for Apple devices, which allow adding additional custom sensors for OneGauge input.

LCD touchscreens are the most versatile and customizable display option we offer.These screens have a more professional and permanent appearance and are ideal for instrument clusters or center consoles. LCD touchscreens offer options such as on-screen buttons to control vehicle accessories via relays or LED lighting options for your screen bezels so you can add lights for turn signals, gauges, or warning lights.

If you have some graphic design skills, you can design your own gauges and gauge layout to fit your vehicle. If not, don’t worry- you can adjust one of our pre-made screen designs or we have designers available who could help you design your ideal screen. To see some of our pre-made screen designs, visit our Themes page.


If you have a modern vehicle equipped with OBDII capabilities (all U.S. vehicles after 1995 are equipped with OBDII), OneGauge can read your vehicle’s built in sensors and incorporate them into your list of sensors that are displayed on your screen.

Early OBD-II has some downsides, including slower communication speed, so fast-changing sensors like RPM and speed may seem slow to update. However, starting in 2008 (though many 2005-2007 vehicles include it as well) vehicles in the United States added Can Bus OBD-II communication that is considerably faster. In both cases, we recommend using an optional OneGauge GPS speedometer and a direct, wired connection to the vehicle’s tachometer signal.

An important note about OBD-II is that OneGauge can only read sensors that are broadcast by your vehicle, and each make and model is different. To learn more, please see our All About OBD-II page. 

For those with an aftermarket or standalone ECU, a CAN-BUS setup is often ideal. A single two-wire connection provides a huge variety of data, depending on the ECU, that is sent many times per second to the OneGauge setup and displayed on your screen. Please see the features list above for a full list of compatible ECUs, but if your ECU is not on there feel free to reach out to us. If you need to add sensors to those you monitor you can use any of our standard sensors in addition to your CAN-BUS data.

Threaded Digital Temperature Sensor

Temperature Sensors are offered in three varieties- analog, digital, and high-temperature. Threaded and non-threaded sensors are available. A standard OneGauge hub supports up to 4 analog temperature sensors and 7 digital temperature sensors.

  • Analog sensors are the same type used in pre-OBDII OEM applications by vehicle manufacturers to feed your instrument cluster. These sensors are dependable and typically last a long time, but sacrifice a little accuracy.
  • Digital sensors are a modern upgrade that provide more accuracy than a standard analog sensor. Digital temperature sensors can last as long as analog sensors if cared for properly.
  • High temperature sensors are used for reading temperatures above ~220 degrees Fahrenheit (100 Celsius). Typically used for exhaust temperatures, OneGauge works with any K-type thermocouple sensors. Up to 8 modules can be added to the standard OneGauge setup to read up to 8 high temp sensors.
Digital Pressure Sensor

Pressure sensors, like temperature sensors, are offered in analog and digital varieties. A standard OneGauge setup supports up to 2 analog pressure sensors, one manifold vacuum/boost sensor, and 6 digital pressure sensors.

OneGauge supports three main pressure sensor types:

  • Manifold vacuum/boost sensor measures pressure or vacuum at the intake manifold for up to 30 PSI. These sensors are great for all engines but essential if you’re running a turbo or supercharger.
  • Fuel pressure sensors can be mounted in-line with the fuel line. The user can select a carbureted sensor configuration (less than 15 PSI) or EFI (less than 100 PSI)
  • All other pressure applications, including oil pressure, can be measured by 100 or 200 PSI sensors.
Fuel Flow Sensor

Two fuel level sensors are included with all OneGauge purchases. In addition, fuel flow sensors are available monitor fuel usage in your vehicle and provide a rough estimate of how quickly your engine is using fuel as well as your gas mileage.

As a note, the fuel level sensors must be programmed to your specific fuel take sender specifications. This requires knowing the resistance values of the sender at empty and full. This information is often easily found by contacting the manufacturer of your fuel sender or doing a simple online search.

Voltage sensors are also provided free with every OneGauge purchase. A standard OneGauge automatically measures the voltage provided to the system by the battery and also offers two additional voltage inputs for voltages up to 25v.

OneGauge also supports two other primary sensor types. A tachometer input is included with every standard OneGauge, but different vehicles require different tachometer solutions. Please review our Tachometer Writeup to see what would work best for you.

Air/Fuel Ratio or Oxygen sensors are also supported by OneGauge setups. The user can choose to install up to two oxygen sensors on a standard OneGauge hub in place of two digital pressure sensors. OneGauge supports a variety of Oxygen Sensor controllers made by Innovate Motorsports, Spartan Lambda Conrollers, Daytona, AEM, and Ballenger.


GPS Sensor

OneGauge supports a GPS speedometer setup that provide not only your vehicle’s speed, but also its latitude, longitude, altitude, compass direction, and time. A GPS speedometer eliminates the need to run a speedometer cable from your transmission, transfer case, or differential. Many phones and tablets provide this information, so please verify that you need a GPS speedometer before purchase.

An odometer module is also available with the purchase of a GPS speedometer that stores vehicle miles driven and adds the option of having a trip meter.

A clinometer, or inclinometer, is an option available to off-road drivers who want to know the roll or pitch of their vehicle. Like the GPS speedometer, these modules install easily into the OneGauge hub and can be added at any time.

Data logging is a feature that is often requested for racing or high-performance applications. Data logging is a standard feature in most phone/tablet apps like Torque Pro, so this is often the easiest route for most users. We recommend Torque Pro on an android device for data logging as it’s the easiest and least expensive method to log data. With Torque Pro you can see the gauges live and select which gauges you want to log, then send the logs via email.

OneGauge also offers a data logging option that saves data to an SD card for future analysis. This feature must be added at the time of initial purchase, however, and cannot easily be added by the user after purchase. The data is saved in text form and the frequency of logging as well as which sensors are logged can be set when the unit is programmed. To access your data, the SD card must be removed or the OneGauge hub plugged into a computer via a USB cable.