When you swap in the 40ISR model, you notice the familiar click dependable motion.
Power Relay MK2P-I 12VDC Coil DPDT 8 Pin with Plug-in Terminal Socket,for Automa
You can tell the Model 700-P400A1 apart quickly, and that saves you time on maintenance days.
When I picked 8501RS14V20, the build felt dependable and the tabs seated well.
A nice touch is that the MAS50MV comes in a small tray that keeps things neat.