No wiring required. Good for decoration, boost gauge, audible shift indicator, temperature monitoring/warning.

Simply plug it into the OBD2 diagnosis port and it can display most of the vehicle parameters available from your car ECU.
7 Display settings available can display from 4 to 12 items on each setting.

The gauge itself is able to display the following key parameters.

However, some parameters may not be available (subject to data available on your ecu and gauge compatibility).
Average Speed
Speed
RPM
Engine oil temperature (Available on 86/BRZ, some BMW models made from 2016 and onwards, Ford Fiesta ST Mk8, VW Golf GTi/R from mk5 onwards & other VAG equivalent model).
Water temperature
Exhaust temperature
Battery voltage
Time
Engine run time
Turbo/ Intake pressure
Engine load
Short term fuel correction (Cylinder1)
Long term fuel correction(Cylinder1)
O2 Sensor voltage
Ignition time
AFR
Gas pedal position
Fuel consumption
Average fuel consumption
Outside temperature (Only specific models)
Transmisstion temp available on some models (PX Rangers, Golf Mk7 GTI/R and a few more)

It works on most post-2008 models.

Suits most hot hatches, BF and newer Ford Falcons, 86/BRZ, Hawk-eye & newer WRXs, VE & VF Holden Commodores, modern 4x4 vehicles and more!

But it does not work on the WRXs before the hawk-eye models, EVO 1-9, Commodore before VE (Except the VZ SV6) and Ford Falcon before the BF series

Products include:
1pc OBD2 meter