The Casambi Push Button Interface 4CH battery-powered module for installation behind a push button by Casambi is a compact wireless interface that allows up to four push buttons to be connected to a Casambi lighting system, enabling functions such as switching, dimming and scene control via Bluetooth and the Casambi app without additional wiring, making it ideal for renovation projects and installations where wired control is not available and discreet integration behind existing switches is required.