You will find that this unbranded relay is quiet in operation, with minimal hum or buzz during long runs.
SSR-100A AC 220V Solid State Electronic Silicon Controlled Voltage Regulator
A nice touch is the gentle tension in the terminals on this unbranded relay, which grips wires without crimping them hard.
You will find that this unbranded relay is simple to install, with clear terminals and a compact body for tight spaces.
I appreciate the blue color, since it helps differentiate this relay from the standard gray ones.