The FS-925 series precision-calibrated Switches that provide reliable and consistent performance; repeatability is within 1%. FS-925E units are factory pre-set for actuation at specified flow rates. This switch provide accurate detection of excessive or insufficient flow rates in such applications as protecting against loss of fluid flow in hydraulic systems, assuring proper coolant flow in semiconductor processing equipment, monitoring high pressure lubrication systems and ensuring proper air flow in water/waste systems.