Bitspower Thermaflow Digital Sensor is extremely useful for water cooling systems. Simply install it within the systems, connect it to the SATA power, and the sensor will detect water flow and temperature, displaying the data on the OLED panel. Concerning the flow sensing, apart from visual display, there is also an audible alarm. If the water flow is too low, a buzzing sound will be emitted, and a warning symbol will appear on the OLED panel, immediately alerting you to any issues in the water cooling systems. As for the temperature sensing, it can be switched between Celsius and Fahrenheit, serving as a crucial tool for monitoring water cooling system temperature. Thread : G1/4" x 2 Dimension(LxWxH) : 70x38x38 MM