Gems Sensors FS-600 Series Stainless Steel 316 Flow Switch, Straight, Thermal Dispersion, 0.97 gpm Flow Setting, 1" NPT Female Wetted Materials: 316 Stainless Steel, 303 Stainless Steel Electrical Termination: M12 x 1 (4-Pin) (1meter cable included Switch Type: SPST (30 VAC @ 45 ma, 42 VDC @ 65 ma) Set Point Differential (Maximum): 0.2 Recommended Filtration: N/A