Where it fits in the panel
The PXF4ACP2-FBMA1: The 1/16 DIN form factor (48 x 48mm panel cutout) is the standard footprint for a temperature controller in a crowded enclosure. It snaps into a panel cutout and clamps from behind — no DIN rail needed. That 50ms sampling speed is the number to watch if you're replacing a slower controller in a critical loop; the faster update can change the PID tuning parameters you need to enter.
