The O-Meter’s physical dimensions are 2.500″ x 1.625″ x 0.800″Check out the documentation to understand what all this unit can do! Does AFR/Lambda/Universal display, data storage, etc. Fully user configurable through two easy-touch buttons. Available in red (brighter) or blue (not as bright but looks cool!). Blue is a little more because of the parts cost.

Here is the instruction guide for the O-Meter so you can read about all the features:

Here is a video of the O-Meter in action:

Here are pictures of how to hook up the wiring between the O-meter and the LC-1: