You will find that this unbranded relay fits standard sockets, and the metal tabs feel secure and nicely finished.
NC-1000 RJ45 TCP/IP Remote Control 8 Channel Relay 250VAC Network Controller
This unbranded relay comes with a clear plastic cover, so dust stays out and you see the internals easily.
A nice touch is the gentle tension in the terminals on this unbranded relay, which grips wires without crimping them hard.