Air conditioner + relay module

Perfect. No problem. good to go ...

Word of advice though, the bottom of that is a metal heat sink. It is supposed to be mounted with white themal paste on an adequate heat sink , preferably with cooling fins. The way that works is a standard heat sink is a block of aluminum that has had
the metal removed between the fins leaving a thick plate at the bottom. You turn the heat sink upside on the workbench, place
the SSR on it, mark the mounting hole centers, then center-punch those and drill and tap for whatever hardware you prefer.
Use 3-in -1 hole while tapping. Clean off the surface with IPA alchohol and apply the thermal paste before mounting the SSR.