Product Model: FST100-YL106 Product Overview: The Filster residual chlorine sensor is a device used to measure the residual chlorine content in water. The residual chlorine sensor contains an electrode that comes into contact with the measuring solution and determines the residual chlorine concentration by measuring the change in potential. When residual chlorine reacts with the electrode surface, the potential changes, and the concentration of residual chlorine can be determined by measuring this change. Product features: Universal RS485 interface, Modbus/RTU protocol; Double high impedance differential amplifier, strong anti-interference and fast response speed; The pipe thread is easy to install, making it convenient for submerged installation or installation in pipelines and tanks. Application scope: Smart water quality residual chlorine sensors can be applied to scenarios such as drinking water, industrial process water quality monitoring, swimming pool water quality management, and industrial circulating water systems.