Hi Seandy,
Welcome to the Forums.
The relay you gave a link to is not able to control current; it can only turn ON or OFF (100% or 0%).
You will need to find another type of module to control current.
Please be careful - mains voltages can and do kill people!
Try and choose a module that includes all of the high voltage components so that you only have to connect to a low voltage isolated input.
Have a search on the forums, I am sure others have posted with details of modules they have used.
Have (safe) fun - Paul
hahaha.. thank you Paul. I'll search from the Forum. I learn different things with this module and comes a lot of idea after I try this module for the first time.