You will find that the Power Relay/Battery Isolator mounts with common hardware, saving trial and error during install.
Gebildet 2Pcs 12V 40A 4 Pin SPST Car Relay Harness JD1912, 12AWG Harness Sockets
The RPM-Q2R20120-01 designation makes tracking simpler, and you will find that very helpful.
Having the NOVITA brand on there is a nice touch, since it keeps things consistent with other gear.
For general projects, the DNF relay fits well because it keeps things simple and predictable in operation.
Functional Devices, Inc. is the brand here, and that gives me more confidence installing it.
What stands out about the unbranded brand is the lack of logos, keeping the look consistent with other anonymous hardware.
You will find that this unbranded relay fits standard sockets, and the metal tabs feel secure and nicely finished.
I like how the GOOACC name sits on the relay, not too flashy, just clear enough to spot at a glance.
A nice touch is how the relay sits snugly in the socket, so you won't worry about loose connections during long projects.
A nice touch is the sturdy casing on this unbranded relay, which feels solid without any rattles inside.