Just thought I’d let you know. It says accessoriy switch and needs master,. But it is only stated that way as it has no load output, only ground , neutral and line.
Which makes it perfect to control hue lights from an in wall location.
You simply wire line to load permanently.
It will pair with a Cooper master as stated but also pairs with St, and it has instant on status.
So no need to okay more for the expensive master.