Portable multi parameter negative oxygen ion detector

Portable multi parameter negative oxygen ion detector, designed with coaxial cylindrical electrodes, can accurately measure small particle size positive and negative ions from nature, as well as high concentration negative ions generated by ion generators and their products, and display the level of air quality; At the same time, an external multi parameter module can be selected to measure PM2.5, PM10, temperature, humidity, formaldehyde, etc, VOC， Air quality parameters such as carbon dioxide. Portable multi parameter negative oxygen ion detector