You will find that RPM-Q2R20120-01 helps keep your parts list tidy and clear.
2Pcs UM1-9W-K 9VDC Power Relay 9Pins
You will find that this power relay stays cool during long runs and handles bursts with no stress power relay is a practical pick when you need to switch bigger devices from low power controls.
I picked the FIPUX brand for this build, and the connections felt secure and neat.
A nice touch is the Bradley logo placement, which stays clear of the mounting hardware for easy access.
The Tyco Electronics brand is known for making solid, no-nonsense products.
You will find that the Action brand relays are straightforward to wire and dependable in everyday use.
A nice touch is how the power relay handles heavier loads without making setup feel complicated.