H2O2 detector uses electrochemical gas sensors, which have the advantages of high sensitivity, stable operation, long service life and low power consumption. It is equipped with functions such as data preservation and export, Chinese and English language switching, two-stage sound and light alarm. The built-in lithium battery can be used for more than 8 hours, which can be calculated for 5 minutes and the average value of 15 minutes. Users can directly turn on the detector after the calibration is complete. Medical disease control public places, occupational health formaldehyde detection. Indoor environment detection indoor formaldehyde removal, air treatment, environmental detection. Interior environment detection car seat cover, cushion and roof lining and other interior decoration materials, with the most prominent formaldehyde release in the new car.