If, for example, several testo 350 S/ XL flue gas analyzers are connected to the Testo data bus, they can each be controlled and read out on your PC. In this way, a faster measurement cycle (<5 s) can be set for each flue gas analyzer than with the RS232 cable.testo easyEmission Software (as download with registration) for PC installation, including Testo data bus controller, USB connection cable, cables for Testo data bus, terminal plug and instruction manual