The part number for a C-Bus wireless 2 gang switch is a 5882TXWMBA.
This product is a battery operated, remote location
2 Gang switch that connects to the C-Bus network for lighting operation/control.
Some of the key features of this product are:
Saturn style wall plate with 2 push buttons.
Operates on 433.92 MHzM Frequency
For further information please visit https://www.clipsal.com/Trade/Products/ProductDetail?CatNo=5882TXWMBA