With the 48V model, a nice touch is how clearly the markings show the voltage on the case.
LOT OF 4 IDEC RM2S-U RELAY 110-120VAC
The Hach Lange branding is clear and understated, which makes setup straightforward.
You will find that the model PSR-SCP-24UC/ESA4/2X1/1X2 2963750 helps techs confirm the right unit without second-guessing.
Bradley has a straightforward look here, and the labeling stays legible even in tight panel spaces.