Type: palm-top combustion gas analyser with 1, 2, 3 or 4 gas sensors. Calibration: automatic calibration procedure at instrument switch-On. Self-diagnosis: Sensors efficiency test with diagnostic messages. Fuel types: Up to 10 selectable from keyboard. Power supply: High capacity Ni-MH rechargeable battery pack / external battery charger. Charging time: 8h at 90% with instrument Off. Battery life: 6 hours (typical) continuous use (without printing and backlight). Printer: Internal impact type 24 columns with 58 mm paper roll. Printer power supply: from the analyser battery pack. Print autonomy: up to 40 reports with full battery (typical). Service and user information: 3 programmable lines. Printed report header: 4 programmable lines Display: 40x58 mm graphic LCD with backlight device. Pump: 1.4 l/m @ 100 mbar Flue gas probes: stainless steel shaft with incorporated temperature sensor. Memory: up to 250 full analysis data structured by boilers (Tags). Serial communication: IR serial port. Optional IR/RS232 serial interface adapter. Operating temperature: from -5°C to +45°C Storage temperature: from -20 to +60°C (3 months maximum at temperatures exceeding the operational limits). Dimensions and Weight: 115x90x330 mm - 1.1 kg with battery and printer