I noticed the model 31016 is stamped right on the casing, which helps when you are sorting through parts.
5-PIN Relay 40A/12V with Pre-Wired Plug/Socket for Horns/Compressors/Alarms/Fog
I noticed right away that it's a contactor relay, so it feels built for tougher electrical work.
A nice touch is how the unbranded brand uses a bright indicator LED, so you know at a glance when it's active.
You will find that this unbranded relay is light but sturdy, making it easy to mount without extra brackets.
A nice touch is the gentle tension in the terminals on this unbranded relay, which grips wires without crimping them hard.
This unbranded relay comes with a clear plastic cover, so dust stays out and you see the internals easily.
You will find that this power relay suits both small boxes and larger panels with ease.
A quick look at the General Purpose Relays shows the ARD4UR model fits neatly into many builds, and you will find that wiring feels straightforward.
A nice touch with the FTR-F3 model is the clear pin labeling that speeds up wiring.
A nice touch is the DC 12V requirement, since many adapters around the house already match it.