What stands out about the unbranded brand is the straightforward labeling on the coil and contacts for easy identification.
Analog Signal Isolator 4-20mA 0-10V 1-5V Galvanic Transmitter 1In1Out 2In2Out
You will find that this unbranded relay is quiet in operation, with minimal hum or buzz during long runs.
This heavy duty relay has a confident click, which suggests the mechanism is solid and built for long life.