The SOBA HR HY is a heavy-duty float level switch designed for aggressive liquids. This float is encased in an HR HY (High Resistance) press-vulcanised housing, which ensures a double waterproof. As the liquid level reaches the float, the mechanical switch inside will tilt, thus closing or opening a circuit connected to an electrical panel. The SOBA HR HY is equipped with an externally adjustable resin ballast, and its +/-25º switching angle ensures a precise level measurement.