G3/4 inch water flow sensor with Hall Effect technology for accurate liquid water flow measurement. This G3/4 flow sensor can function as a flow meter, flow switch, and counter for flow sensing installations. Construction The sensor is crafted from robust copper materials to deliver durable, long-lasting performance and reliable resistance across a variety of applications. Wiring Designed for easy setup, it uses color-coded wires: red for positive, black for negative, and yellow for the pulse signal, making installation straightforward. Integrated technology A sealed Hall Effect sensor generates electrical pulses with each rotation, providing precise flow readings while keeping the sensor protected from water exposure. Applications Versatile for water heaters, coffee machines, drinking fountains, and other water-using equipment. Suitable for both residential and commercial settings where dependable flow sensing is required. Size and compatibility G3/4" thread size supports standard plumbing connections for widespread compatibility with flow systems.