Testo NO2 Sensor Code 0393.0200

This is a pre‑calibrated electrochemical replacement NO₂ sensor designed for Testo 340 flue‑gas emission analyzers. It delivers reliable nitrogen‑dioxide measurement for combustion‑exhaust testing. Ready‑to‑use out‑of‑box, it supports quick on‑site user swap‑out without extra calibration, ideal for industrial emission monitoring and boiler system diagnostics。