INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C)

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🏕️🏕️【PREMIUM DETECTOR】 This multifunctional air quality monitor can as it should be detect the current CO2 concentration, temperature, and humidity in the air. It mean you can remember indoor air quality at a glance.
⏰⏰【CO2 CONCENTRATION STAGE & SOUND ALARM】 This CO2 detector 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 is going to alarm you when the detected CO2 concentration is beyond the protected value you customized.
🛣️🛣️【CONVENIENT CALIBRATION】 To verify the accuracy of measurement, this 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 meter easily. This CO2 detector uses the NDIR CO2 sensor.
🔋🔋【LONG BATTERY STANDBY】 A 2400 mAh lithium battery is embedded inside the indoorCO2 monitor, supporting a very long time of continuous use, before it adopts a large and distinct LCD 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 CO2 detector in an effort to hang it up to the wall for simple viewing. The indoor CO2 meter for grow tents is ideal to be used in grow room, offices, kitchens, schools, kitchens, schools cellars, and cars.