Panel indicators and rotary switches for the pump control panel.
These large size indicators are a standard size, fitting into a 22mm diameter hole. Traditionally these would have contained incandescent filament lamps, but new ones are generally LED like these examples.
These are 24 volt items, made by Camden Boss and three colours will be used on this panel - red, amber and green.
Other colours and other voltages are available, and they can be used on either AC or DC.
The rotary switches have two positions, and have two separate single pole switches, one normally open and the other normally closed. By linking the two switches to create a common input, a changeover switch is created (SPDT).
Part number for these switches is SS30-1-O/C-BK