This industrial ORP sensor is designed for online oxidation-reduction potential monitoring in water systems. It provides dual output: RS485 Modbus RTU and 4–20mA analog, supporting stable long-distance transmission and easy integration with PLC, DCS, and SCADA systems. With high accuracy, IP68 waterproof, corrosion-resistant housing, and automatic temperature compensation, it works reliably in wastewater, aquaculture, chemical processing, and environmental monitoring. Simple to activate, calibrate, and maintain, it delivers stable data for long-term online use.