INKBIRDPLUS Ndir Air Quality Monitor Indoor with Battery Powered | 3 in 1 Detect for CO2 & Temperature & Humidity | for Home, Office, RV, Grow Tent (PTH-9C)

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About This 【PREMIUM DETECTOR】This ndir CO2 Air Quality Monitor Indoor can accurately detect the current CO2 concentration, temperature, and humidity in the air. It can help you und erstand indoor air quality at a glance 【CO2 CONCENTRATION STAGE & SOUND】 This ndir Air Quality 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 Air Quality 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 Air Quality Detector easily. This CO2 detector uses the NDIR CO2 sensor 【USB RECHARGING】 A 2400 mAh lithium battery is embedded inside the indoor Air Quality 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 Air Quality Monitor for grow tents is ideal for use in grow room, offices, kitchens, schools, kitchens, schools cellars, and cars Show more