Working principle: our control switch automatically turns the pump on and off according to the change of pressure in the pipeline, realizing driverless control. Basic value: the rated voltage of the switch pump pressure control is 110v 230v 380v, the maximum current is 10a, and the operating temperature is 055. Pressure adjustment: The pump pressure can be adjusted by the pump pressure switch, you can adjust the adaptive pressure according to the working conditions. Interface thread: the interface thread of our switch Pump pressure control switch is zg1/4in g1/4in, which is easy to install and friendly for novices. ABS and metal: The pump pressure switch is made of ABS and metal materials with excellent evidence of craftsmanship and corrosion. Note:1. Please check the part number of your item, the relevant information is for reference only. 2. If you are not sure about the item, please contact us before purchasing to avoid unnecessary returns, thanks!