SPDE121901R is a single-phase compact DIN-rail power supply designed to deliver 192 W of output power at 12 VDC with a rated output current of 16 A. The unit features high operating efficiency of 92% at 12 VDC and accepts input voltage from 100 VAC to 240 VAC (47–63 Hz), with an input voltage range of 85 VAC to 264 VAC maximum. It incorporates comprehensive protection functions including output short circuit, over-current, over-voltage, and over-temperature protection, along with a DC OK relay output for status indication. The power supply operates reliably across a wide temperature range of -40°C to 70°C, with an MTBF exceeding 300,000 hours, making it suitable for industrial equipment, machinery, and installations with limited panel space where compact, high-performance power delivery is required.