Features: Th is flow switch is an automatic element that controls flow in pipes, which can be used on water treatment system, central air conditioning, water cooled chiller and relative industries . A ppl ica ble fluid includ es w ater, ethylene glycol,oil or oth er liquid not classified as hazardous or corrosive . F low control value is adjustable, repeat action point is stable . P rotection grade is I P54 the contactor life is up to 100,000 times . W hen flow rate exceeds set value, fluid drives blade and micro switch, the SPDT contact can connect a circuit and disconnect other circuit . It can not be used when fluid temperature drops below freezing point. Specifications: Output Form: Micro switch SPDT output Micro Switch: 15A(max.), 250VAC or DC Contact Lifespan: 100,000 times Model: HFS-20 Thread: R3 or 4 Fluid: Water, oil Fluid Temperature: 1-100 Max. Pressure: 10bar IP Grade: IP54 Package Includes: 1 x Flow Switch 3 x Paddles Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. . Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.