The Water Flow Sensor category at Roshanex offers sensors that measure how much water passes through a pipe. It includes the Arduino YF-DN40 1.5 inch and YF-DN50 2 inch models. Each unit sends a signal as the liquid moves, so a microcontroller can work out the flow rate.

Engineers, students and hobbyists use these sensors in water meters, irrigation controllers and tank monitoring systems. They also suit smart home projects where you want to track water use or detect leaks. If you are unsure which size to choose, match the sensor to your pipe line. Compare both models and order your water flow sensor online with delivery across Pakistan.