INKBIRDPLUS Ndir CO2 Detector Battery Powered | Digital CO2 Monitor with Alarm | Carbon Dioxide & Temperature & Humidity Air Quality Monitor Indoor | for Home, Office, RV, Grow Tent (PTH-9C)

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About This 【PREMIUM DETECTOR】This ndir CO2 detector can accurately detect the current CO2 concentration, temperature, and humidity in the air. It can help you understand indoor air quality at a glance 【CO2 CONCENTRATION STAGE & SOUND ALARM】 This ndir CO2 monitor is designed with 3 stages of CO2 concentration—normal stage (400-700 ppm), warning stage (700-1500 ppm), and dangerous stage (1500-5000 ppm). It will alarm you when the detected CO2 concentration is beyond the safe value you customized 【CONVENIENT CALIBRATION】To ensure the accuracy of measurement, battery powered CO2 monitor supports the calibration function. Press three buttons at the same time in an open environment and let it stand for 200 seconds to calibrate this CO2 detector easily. This CO2 detector uses the NDIR CO2 sensor 【USB RECHARGING】 A 2400 mAh lithium battery is embedded inside the indoor CO2 monitor, supporting a long time of continuous use (input: 5V-1A), before it adopts a large and distinct LED screen for ease for temperature or data viewing. display based on your need 【WIDE APPLICATION】 A hanging hole is designed on the back of this portable indoor CO2 detector so that you can hang it up to the wall for easy viewing. The ndir CO2 monitor for grow tents is ideal for use in grow room, offices, kitchens, schools, kitchens, schools cellars, and cars Show more