Plug and play

Works on its own — nothing to program
Recommended
Pro Lambda 01D21V00 wideband AFR gauge with display and app App showing AFR, lambda, EGT and RPM readings

Pro Lambda 01D21V00

Logs the history and shows it as graphs on your phone. You can also read it on its own screen.

MeasuresO2-Lambda-AFR · RPM · EGT- up to 1000 °C

Plug and play App Android/iOS/macOS Datalogger CSV Graphs Display Arduino (optional)
View the Pro

For Arduino

They need a board — they do not work on their own
Recommended Lambda Module 01M11V00 wideband controller wired to an Arduino

Lambda Module 01M11V00

Add it to your project. Ask it, and it gives you the reading.

MeasuresO2-Lambda-AFR

Requires Arduino 5 lines of code You do not need to know how it works Low resource use SPI bus · 4 pins Library Lambda.h
View the module
Out of stock Lambda Shield 01S00V00 wideband controller on an Arduino board

Lambda Shield 01S00V00

Learn to use the chip. You write the code.

MeasuresO2-Lambda-AFR

Requires Arduino Direct access to the chip CJ 125 High resource use
View the shield

Want a display, an app and data logging as well? The Pro Lambda 01D21V00 connects to Arduino too →