You will find that the unbranded design things basic, which makes troubleshooting quick and stress-free for most setups.
Miniature Relay HK4100F-DC3V/5V/9V/12V/24V-SHG 6 Pins 3A PCB Mini Power Relays
This unbranded relay comes with a clear plastic cover, so dust stays out and you see the internals easily.