The Fuji Electric PXF4ACP2-0VVA1 is a self-tuning 1/16 DIN (48 x 48 mm) compact temperature and process controller with a 50 ms sampling speed.
The 1/16 DIN (48 x 48 mm) cutout is the standard panel-mount footprint for temperature controllers — fits the same DIN 43700 panel opening as every other 1/16 DIN unit on the market. Depth behind the panel is typically around 100 mm including the screw-terminal block; plan for clearance when routing thermocouple or RTD extension wires to the rear terminals.