You will find that the RIB brand is printed neatly, and that detail helps during replacements or upgrades.
RIB ESR02P Emergency Lighting Bypass/Shunt Relay Coil: 208-277 VAC, 20 Amp DPDT
You will find that the RIB brand appears on the side, keeping parts identification the job.
functional devices, inc. is the brand here, which I think adds some peace of mind.