Portable Combustion Analyzer Kit, Excess Air 0 to 250 Percent, Includes Probe, Hose Assembly, Batteries, IR Printer, (2) K Type Temperature Probes, (2) Pressure Hoses, True Draft Probe, Gas Pressure Hose, AC Adapter, (2) Rolls Printer Paper, (2) particle filters, Carrying Case and Instructions, Display LCD, Portable Combustion Analyzer Kit, Fuel Type Natural Gas, Propane, Heavy Oil, Light Oil, Bio Fuel, Wood, Manufacturers Warranty Length 5 Years, O2 Concentration 0 to 21 Percent, Battery (4) AA (E) 6CMR8, 6CMR9, 6CMS0, 6CMS1, 6CMS2, 6CMS3, 6CMS4, 6CMS5, 6CMS6, 6CMS7, 6CMS8, 6CMS9, 6CMT0Measures flue and ambient CO, CO2, NO, and differential pressure and flue temperature Calculates O2, efficiency, excess air, and CO air free Residential/Commercial Full-system diagnostic analyzers are designed to reduce fuel cost. EOS sensor technology requires no O2 sensor replacement. Instrument includes batteries. KIT models contain IR printer and paper, 2 Type K temperature probes, true draft probe, 2 pressure hoses, gas pressure hose, spare filters, and AC adapter. 6CMR7 and 6CMT0 add smoke pump test11er and test11 papers for oil services. Combustion System Analyzers Each item is complete with probe, hose assembly (except (F)), and carrying case.