I like the 2pcs - 4pin relays because the pin layout is easy to follow and label.
2PCS 4-PIN 40/30 AMP 12 V DC Waterproof Relay Kit Harness Socket – Heavy Duty…
You will find that SICK manufacturing standards are evident in the fit and finish.
A nice touch is the sturdy casing on this unbranded relay, which feels solid without any rattles inside.
What stands out about this relay is the black color, which gives it a professional and understated look on the board.
It’s a nice touch that the connector style matches, since it replaces 118168-01.
With 2pcs - 4pin relays, you can wire a small control circuit and still have a spare on hand.
A nice touch is the consistent 8T2T-CA format across the batch, simplifying replacements later.