You will find that Miniduino boards pair well with common controllers, making setup less of a chore.
2 Pack Waterproof Relay and Harness Kits 40/30 AMP 12V Relay Switch, 5 Pin SPDT
You'll see that this comes as a set of 2Pcs and the size makes it easy to stock up for future projects.
The size of this 2Pcs set feels just right for common tasks and the parts don't get lost easily.
I appreciate that the 2Pcs size isn't bulky and still feels sturdy when you hold it.
A nice touch is that the 2Pcs size fits well on a standard rail, and you can add more if needed.
It feels good knowing the 2Pcs are a manageable size and you will find that they fit well with other parts.
When you pick up the THC-15A model, you will find that its size feels compact and manageable for quick installations.
ELK makes a solid general purpose relay, and what stands out is how clearly the rated current is printed.