Since it's unbranded/general, you can repurpose it across devices without worrying about brand-specific aesthetics.
1 Set JQX-38F DC 36V 40A 11-Pin 3PDT Coil Power Relay With Socket base
It has a nice touch of being unbranded/general won't clash with your existing setup.
A nice touch is the plain casing, where the unbranded/general appearance makes repairs feel straightforward.
The simple look is a nice touch, and the unbranded/general style keeps things flexible for users.