Modules of lighted pushbuttons PH-xx are meant for use in steering, signalling and protection circuits. They represent supplementary equipment to the family of relays enabling construction of steering switches mounted on the level of relays, using same type of housing and sockets. The PH-xx module have EAO fitting mounted inside. It is possible to mount lighted pushbutton with the shade in any colour, having maximally 3 packages each and maximally 14 terminals. Those combinations enable multiple steering solutions in the external circuits.