The world's first semiconductor sensor technology is used in this product, it is easy to monitor 5 water quality indicators: active chlorine, pH, TDS, ORP and temperature. This small equipment can be easily installed with water purifiers, water heaters, refrigerators and other water-related home appliances, which can meet the demand of home appliance manufacturers for water quality monitoring and lead the upgrading of the consumer side. At the same time, this equipment can also be extended to aquaculture, environment, agriculture and other fields of application (Researching and Developing).