Inner Volume:50,190 Lit Working Temp. Amb.+5 oC up to 60 oC Non-Controlled relative humidity: Max 95% at 37 oC CO2 Concentration:0.1 up to 20% CO2 CO2 sensor:Drift-free infrared(IR) sensor Interior:Stainless steel DIN 1,4571 AISI316 HEPA filter on incoming Large color touch screendisplay Audio and visual alarm of error state SD card system saving the data in MS Excel format RS232 port,BMS relay alarm contact On board data-logging facility with graphs