Adjustable pressure function: This is a water pump pressure control switch for perfect pressure control. When adjustable rise and fall thresholds are reached, a pressure switch with a 40-60 pressure setting range activates the electric water pump in the power circuit. Widely used: 1/4 inch internal thread NPT, standard pump replacement switch, designed for all types of electric pumps (jet, submersible, reciprocating, etc.). Premium material: the pressure control switch is made of high quality material with high strength and durability. The contact can be opened when the pressure rises, extending the service life. Easy to use: water pressure control is easy to use, stable performance, motor protection, power saving, long-term use. Material: plastic colour: grey Package Contents: 1 x pressure switch for pump Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.