FB30 water pressure switches provide reliable control for automatic water systems with time function. The pressure switch is universally acceptable for water well pumps and pumping systems usage. FB10 water pump pressure switch can prevent pumps from starting while system pressure falls considerably below the cut-in pressure. It will automatically cut the water supply restoration. A manual reset lever will be decreased if system pressure is suitable for automatic operation. The simple design makes it easy to use for both professionals and normal users.