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Series FS-500 Stainless Steel Horizontal Float Switches are durable, versatile float switches with a wide range of usage and applications. Three fitting configurations and two temperature ranges, all carrying NSF 169 and CSA approvals, make the Series FS-500 an easy choice for OEM, water and wastewater, and chemical applications. With their compact size, all stainless steel wetted materials, and reversible switch orientation, FS-500 switches are go-anywhere, use-everywhere switches.