What stands out about this design is the clear labeling near the Emergency Stop Module for quick identification.
30A 5 Pin Relay Connector Socket with 25 x 6.3mm Terminals Car Truck Vehicle Rel
A nice touch is that the 2 pack lets you keep one relay in a tool kit.
The relay carries the RIB brand will find helpful when sorting through similar parts later.
You will find that Miniduino relays fit standard layouts, which makes troubleshooting a bit less stressful.
What stands out about the 40ISR model is that cables route cleanly without tugging or twisting.
What stands out about the unbranded brand is the lack of logos, keeping the look consistent with other anonymous hardware.
You will find that the Formiden name stays visible, which is a nice touch in a crowded enclosure.
A nice touch is that the WD3556 appears right on the label, so you double-check with confidence.
You will find that the 2 pack of relays is great for testing different wiring ideas.
You will find that the 2 pack of relays gives you a handy spare for any project.