A redundant network interface for ethernet devices is disclosed. The safety valve is adapted for engagement with the tubular vent stem so that the fluids may enter the safety valve. Example entity types are restaurant, hotel, etc. Activation of the first, second, and third bimorph beams allows vertical displacement of the platform with respect to the substrate, with negligible lateral shift. A further step includes forming the item from the selected blank such that a prefabricated terminal subsurface of the blank remains unmachined in at least a central region thereof. The printer representation is of higher resolution than the screen representation, and the screen representation is of higher resolution than the thumbnail representation.