The Parallax Power Supply 45SR is a reliable and high-quality 45 amp power supply with a DC output voltage rating of 12V. Made in the United States, this switching mode power supply has a built-in 45 amp inrush current rating, ensuring stable and efficient power delivery for various electrical equipment and supplies. Complete with a box and manuals, this power supply has been tested and is in full working order, making it a valuable addition to any business or industrial setting requiring a steady power source.