CO2 Meter Handheld CO2 Detector, 0-9999ppm Digital CO2 Monitor Temperature and Humidity Meter Carbon Dioxide Detector with NDIR Sensor Buzzer Alarm and Clibration Function for Home Grow Room

Large LCD Display: This CO2 detector features a large LCD display with a backlight. It shows real-time readings for carbon dioxide concentration, temperature, and humidity at the same time. Sound Warning Alarm: The monitor will beep and alert you when the CO2 level goes above the user-adjustable preset thresholds. Convenient Design: The carbon dioxide detector has a portable handle for easy manual calibration of CO2 and humidity to ensure precise detection. It operates on included batteries or a 9V adaptor (adaptor not included). High Accuracy: The air quality monitor is fitted with a stable NDIR sensor. Accuracy: CO2: ±50ppm or ±5% of the reading; Temperature: ±0.6°C/±0.9°F; Humidity: ±3%RH (at 25°C, 10~90% RH); ±5%RH (at 25°C, others). Wide Measurement Range: The CO2 monitor offers a broad measuring range. CO2: 0~9999ppm; Temperature: 14°F-140°F (-10°C to +60°C); Humidity: 0.1% - 99.9%RH; Dew Point: -20.0 - 59.9°C; Wet Bulb: -5.0 - 59.9°C. Wide Application: This CO2 meter can accurately monitor air quality and is widely used in public places such as offices, classrooms, factories, and hospitals