W17 Portable CO2 Meter High Accuracy Mini Air Quality Detector CO CO2 HCHO TVOC AQI Air Quality Detector

Boot preheating 120 Seconds. Operating voltage 5V. Battery capacity 850 MA. Charging time About 3 hours. Product Description. Model Number. HYT054. Product size. 120X63X26mm. Boot preheating. 120 Seconds. Operating voltage. 5V. Battery capacity. 850 MA. Charging time. About 3 hours. Working time. About 300 minutes. Weight. 150g. Measuring gas type. CO/CO2/HCHO/AQI/TVOC. Common sense and precautions for instrument operation: 01. Please check whether the instrument is in good condition before use. 02. The instrument can be tested and used only after the startup data is stable. 03. The instrument needs to warm up for 120 seconds every time it is turned on. 04. Doors and windows must be closed for indoor inspection to maintain natural indoor air circulation. 05. The detection time of the instrument is about 10-60 minutes, and it is about 3-15 minutes in a small space such as cabinets and drawers). 06. It is recommended to monitor for a long time. Real-time data is unstable. Please refer to