Application: Exhaust Gasses from Gasoline Vehicle (two-wheel or four wheel), LPG Vehicle (four-wheel vehicle) Principle: CO, HC, CO2, : Non-Dispersive Infrared (NDIR). Air-to-Fuel Ratio (AFR), Excess Air Ratio (Lambda) Carbon Balance Method or Brettshneider Method (with O2 Measurement). Monitor Display: LCD. Power Supply: 100V to 240V AC 50 to 60 Hz, 1ph. Weight: Approx. 4kg (WIthout Optional Unit)