Flow return sensor in/out De Dietrich 7809520

The flow return sensor in/out is a dual-purpose temperature sensor that monitors both flow and return lines in heating circuits. This spare part is critical for optimizing boiler performance and energy efficiency by providing accurate temperature data. Whether you are upgrading your system or replacing a worn sensor, this component fits standard in/out configurations. It is an essential tool for technicians focused on boiler maintenance and repair, helping to balance heating loops.