Fuji PXF4 Series is a compact 48×48 mm PID temperature controller designed for accurate temperature and process control. It supports universal sensor inputs, PID/Fuzzy PID control, Auto-Tuning, and multiple output options including Relay, SSR, Current, and Voltage outputs. Optional RS485 Modbus communication and alarm functions make it suitable for plastic extrusion, hot runner systems, ovens, furnaces, and industrial heating applications.