MySensors button

Third party integrations
1

Which is the correct type for buttons connected to a node and controlling let’s say relays?

S_LIGHT is deprecated as class since 2.0 and is substituted as S_BINARY. But as binary is suitable for relays.
So does it still make sense to use s_binary and V_STATUS for the buttons?

2

Yes, if you want a switch entity in home assistant, use S_BINARY and V_STATUS. If you want a binary sensor, use eg S_DOOR and V_TRIPPED.