The part number for a Saturn push button dimmer is 4061E2PUDM-TR 250V 350W. This is also compatible with the Saturn Zen Range.
This part can be used to control loads such as incandescent lamps, 240V halogen lamps, dichroic lamps and low voltage lighting that uses iron-core or electronic transformers. The dimming performance has been optimised to ensure smooth, linear, flicker-free dimming across the control range. The Clipsal C-Thru Integrally Switched Push Button (ISPB) dimmers set new industry standards for compatibility and reducing the space required in a wall plate.
Please see following link for further details and complete range of Saturn products.