The SENIC & GIRA Friends of Hue Outdoor Switch switch has arrived. Testing with deCONZ v2.25.3 it paired just fine and emits button events. Judging by what the sniffer shows and the code, this is working since April 2019 https://github.com/dresden-elektronik/deconz-rest-plugin/commit/5a3767b7c3d6802d619368a63b5f856549d7a1e0
I don’t know yet what is different in the commands send by your switches, so I’ve added more debug printing to pin point the differences. Do you run 32-bit or 64-bit Raspbian? I can create a test version to gather more info via debug logging.