Flow sensors designed specifically for NR tankless water heater models to ensure optimal flow sensing and reliable operation. Durable construction provides accurate flow measurements, essential for maintaining efficient water heating operations. Essential component for enhancing the longevity and functionality of residential water heating systems. In residential settings where a consistent hot water supply is important, it helps the water heater operate smoothly and efficiently. Compatibility and performance: designed for NR model tankless heaters; delivers reliable flow data to the system. Use scenarios - Replacing a worn or faulty flow sensor in an NR tankless heater to restore stable temperatures and consistent hot water. - New installation of an NR tankless water heater in a home with steady hot water needs, ensuring accurate flow readings from the start. - Upgrading an existing home heating setup to an NR tankless system to maintain efficiency and reliable hot water supply.