A water flow meter with pulse output is a device designed to measure water flow rate by producing electrical pulses proportional to the volume of water passing through it. Flow meter typically uses a turbine mechanism, where a rotor with multiple spokes spins as water flows through the meter. Magnets embedded in the rotor activate a Hall Effect transistor, generating a series of square wave pulses. Each pulse represents a specific volume of water, allowing for precise flow measurement. The pulse output signal's amplitude ranges from 5 to 28 VDC, depending on the input voltage, with a frequency reaching up to 240 Hz at maximum flow rates. These meters are versatile and offer PNP and NPN outputs, making them suitable for various applications, including water treatment, irrigation systems, industrial processes, and HVAC systems, where accurate and reliable water flow measurement is critical for monitoring and control.