Friends of Hue switch

I have an LDM42-FOH4-WIT-Zi (friend of Hue Switch) and cannot get it into ZHA.
I can’t find a way to start the teach-in mode on the switch.
Can someone tell me how I can learn the switch, or is that not possible? I have a conbee3 .
Thank you!

Is this a Green Power switch? If so, it’s not supported by ZHA.

You might get it working with Z2M - although I don’t see it in their database.

It’s not mentioned in the Blakadder database either.

You need to check these things before you buy.

It works with Phoscon and deconz but I need zha. But I fail because I can’t get it into learn mode. Unfortunately there is no led on the switch but thanks for the hints.