This NOx monitor by Thermo generates three continuous signals: NO, NO2 and NOx. All three ranges are independent and have available outputs at the back of the analyzer. The i series of analyzers also allows for ethernet connections. The Thermo 42i can function as a datalogger and has enhanced diagnostics over its predecessors. The 42i also has dual range capabilities. Ambient monitoring and dilution cems are common uses for this device. This item is also available for rent from CleanAir Europe.