You will find that the RT911 color makes labeling tape contrast nicely for quick reads.
VAPOR CORPORATION 57621552-04 3PDT 10A COIL 12 VDC
A the TE brand is easy to read, and that saves time.
You will find that the LY2NJ fits snugly into standard sockets without any finicky alignment issues.
You will find that Jsdan relays are easy to document, since the markings stay visible over years of service.
The heavy-duty casing feels solid, and remote access is handy for quick checks without opening the enclosure.