Airfuel controller for measuring carburetion with digital precision wideband probe with everything integrated in the cable, but without display.
Software and manual with data acquisition analysis program in English.
Used by many manufacturers of motorcycle and car test benches with interconnection to the test bench software.
It uses a Bosch 4.9 wide band linear lambda probe which is very precise and accurate and is the latest version.
Since it has no display, to view the carburetion you need a PC that can show the reading full screen on a monitor, or display it on log software, or acquire it directly from a control unit, or acquire it via an SD card with an interface to be purchased separately, or purchase a display pressure gauge separately.