ADJUSTABLE PRESSURE FUNCTION: This is a water pump pressure control switch for perfect pressure control. A pressure switch with a pressure setting range of 40-60 psi activates the electric water pump in the power circuit when adjustable rising and falling thresholds are reached. Widely Used: 1/4 inch female NPT, standard well pump replacement switch, designed for use with all types of electric well pumps (jet, submersible, reciprocating, etc.). High-quality material: The pressure control switch is which has high strength and durability. The water pressure control is easy to use, stable in performance, protects the motor, saves power, and can be used for a long time. Suitable for most pumps, such as self-priming pumps, water pumps, garden pumps, etc. It is also suitable for hot and cold water automatic pumps etc. Material: Plastic+Metal colour: grey Package Contents: 2 x Water Well Pressure Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.