This 3-in-1 CO2 datalogger & monitor is designed for fast & accurate measurement & logging of CO2 level, air temperature, and humidity. An ideal instrument for indoor air quality (IAQ) diagnosis and HVAC system performance verification.This logger is factory pre-calibrated at standard 400ppm CO2 concentration. IAQ monitoring and ventilation surveys of CO2 level & air ventilation become widely applied in public areas such as offices, classrooms, factories, hospitals, day care centers, and hotels.Features: Data logging up to 15,999 points Data can be saved to memory 1-Key touch to activate the logging mode Real Time clock and Calendar Warning Carbon Dioxide Level from 1000-5000ppm Super large LCD w/ 15° Tilt Angle & large digital readout Indoor air quality level indication (Good, Normal, Poor) Display CO2 value, Air Temp & RH, Year-Month-Date, and Hour-Minute simultaneously Maximum /Minimum CO2 value recall Function Selectable °C and °F Stable NDIR (Non-Dispersive Infrared) for CO2 detection ABC CO2 Automatic Background Calibration (ABC) and manual CO2 calibration Longtime drift compensation Bright LED visible indicates power is ON Audible Alarm on both high limit & low limit (adjustable) Easy to connect with PC for data download CE Marking Specifications: Measuring Range CO2: 0~9999ppm Air Temperature: -10 ~ 60°C (14 ~ 140°F) Air Relative Humidity: 0.1 ~ 99.9%RH Resolution CO2: 1ppm Air Temperature: 0.1°C / 0.1°F Air RH: 0.1%RH Accuracy CO2: ±50ppm or ±5% of the reading (0~2000ppm); ±10% of the reading (Above 2000ppm) Air Temperature: ±0.6°C, ±0.9°F Air Relative Humidity: ±3%RH (at 25°C, 10~90% RH) ±5%RH (at 25°C, 90% RH) Response CO2:
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