The PXF5ABY2-MV1A1 is a self-tuning 1/8 DIN (48 x 96mm) compact temperature and process controller with a 50ms sampling speed. It's a current-lifecycle part, so it's still a standard BOM line item, not a scavenger hunt.
The 1/8 DIN form factor (48 x 96mm) is a standard panel cutout — fits the same hole as every other 1/8 DIN controller on the market, so no panel rework if you're swapping out an older unit. The self-tuning algorithm handles PID autotune on startup, which saves the commissioning engineer a loop of step-response tests. 50ms sampling is fast enough for most thermal loops; if you're controlling a gas-fired radiant tube where the thermocouple response is already slow, you won't see a benefit, but for electric heaters or small ovens it tightens the steady-state band.