The YF-S201 1/2′′ Water Flow Sensor is a reliable highly accurate Hall Effect water flow meter designed to measure the flow rate and total volume of water in pipelines. Featuring a built-in magnetic rotor and Hall Effect sensor, the YF-S201 generates electrical pulses proportional to the water flow, allowing microcontrollers such as Arduino, ESP32, ESP8266, Raspberry Pi, and STM32 to calculate real-time flow rate and water consumption.
With its 1/2-inch threaded inlet and outlet, compact design, and easy installation, the YF-S201 Water Flow Sensor is widely used in smart water management systems, automatic water dispensers, irrigation systems, coffee, industrial automation, home automation, and DIY electronics projects.Operating specifications include a 5–18V DC supply, 1–30 L/min flow range, and pulse output proportional to flow rate.