The Weasch relay suits hobby electronics well, and you'll like the simple instructions included.
ZENITH CONTROLS K-1120 COIL CONTROL RELAY 120V COIL
A nice touch is how the type reads NULL a minimalist, adaptable approach.
you can tell it's a Potter just by the color and labeling, which is really convenient.
You can tell the THC-15A model is well made, since the coil feels balanced and does not buzz when energized.
A nice touch is the corrosion-resistant finish on the automotive relay, and the model stays clean after months of use.