The case of indoor swimming pool equipment in China is an indoor commercial swimming pool with high water quality requirements. Our Fasile multi parameter online water quality detector can monitor multiple parameters simultaneously, such as pH value, dissolved oxygen (DO), conductivity, turbidity, temperature, oxidation-reduction potential (ORP), ammonia nitrogen, nitrate, total dissolved solids (TDS), heavy metal ion concentration, etc. The water quality of the swimming pool can be monitored in real-time through mobile phones, tablets, and computers to ensure that the water quality meets relevant standards, and to detect and warn of water quality abnormalities in a timely manner. The built-in storage can record detection data for a long time, and power-off data can be saved for up to 3 months.