• Measures: CO, CO2, Differential Pressure, Flue and Inlet Temperature
• Calculates: Differential Temperature, Efficiency (Net, Gross), Excess Air

FEATURES
• Up to 6-Year warranty with annual recertification
• Differential Pressure
• 3 types of sensor protection:
• Over-range protection pump
• NOx filtered CO sensor
• Low Flow Detection
• Large 6-line backlit display
• Temperature Differential w/ K-Type probe inputs
• Protective water trap