No, the pump is an “on-demand” which means it just sits idle when the system is pressurized. When you open the sink or flush the toilet the pump will automatically kick on to resupply water.

Do you have to manually turn the pump on and off when you intend to use the sink? Does it cause issues if you turn the sink off & the pump is on?

There are two areas of connection, power and water. The pump has a 2-wires for DC power (+, -) I connected these wires to a male cigarette lighter plug and then connected a female cigarette lighter receiver to my DC battery. This allows for an easy plug-in connection to the battery. For the water connection, the IN side goes to my water supply and then the OUT goes to my sink & toilet. If you have any other questions just let me know.