EAO's Series 04 switches are available in a number of formats, including square and round indicators, pushbuttons, rotary switches, emergency stops and mushroom-headed pushbuttons - all of which meet world-wide standards. They can either be flush-mounted to a panel, providing protection against accidental operation, or raised for viewing the status from the side. Additional lens protection can be achieved with an extended or sealed ring. Lenses are available in a selection of colours together with film inserts for legends or symbols, and may be illuminated with either high-intensity LEDs or incandescent lamps. Series 04 snap-action or slow-make pushbuttons come standard with hard silver contacts or, for particularly aggressive environments, silver/palladium contacts. A gold plated contact is available for switching lower currents