- Field-replaceable sensors
- Built-in printer (non-thermal)
- CO sensor (0 to 8,000 ppm)
- Unbreakable metal connections
- Robust “boiler room” design
- Two-year sensor warranty
- O2, CO, CO2
- Efficiency, excess air, all necessary temperatures
- Rechargeable battery and AC charger standard
- Built-in manometer
- Built-in thermometer (ambient and flue gas)
- Built-in CO leak detector (safety)
- 10 fuels and oils standard
- Calibration certificate for proof of accuracy
- Dual hose (9 ft) and 12-in.probe (gas and draft at same time)
- Vinyl carrying case