You will find that the DC 12V input plays nicely with common bench power supplies and wall adapters.
DC 12V Coil Voltage 30A DPDT 2NO+2NC General Purpose High Power Relay 8 Pin
What stands out about this relay is the model 7.4.1.7-2, which simplifies reordering when the project scales up.
The DC 12V rating means you can daisy-chain a few units without overloading your source.
The relay has a programmable timer that works for both short and long cycles.
You will find that the DIANN brand is mentioned right on the relay, which feels reassuring and trustworthy.
A nice touch is the smooth spring action inside this unbranded relay, which feels reliable without being too stiff.
I like that it uses the Klixon brand, which shows care in the parts selected.
You will find that this unbranded relay is quiet in operation, with minimal hum or buzz during long runs.
What stands out about this unbranded brand is the clean coil marking, which helps you avoid wiring mistakes during setup.
The black color gives it a neutral presence that doesn't fight with your wire colors or labels.