Infinity Flow meter controller has a flow sensor with magnetic multi-blade spinning rotor(impeller) mounted inside at right angles to the flow. The rotational speed of the impeller is proportional to the velocity of the fluid. The pulse generated is transmitted and converted into volumetric measurement. These controller are calibrated and to give reliable flow measurement FEATURE Easy Size Selection OF Flow Sensor’s 7A / 230V Relay For Every Tripping Alphabetical 16×2 LCD Display for Easy Monitoring Two different size OF Flow sensorS can connect & monitor Display can show Total Volume in liter as well m³ 15mm, 20mm, 25mm, 40mm, 50mm different sizes can Support