The Standard Power Inc. SPS 33-24/28 Switching Mode Power Supply is a reliable product designed for indoor use. With dual output voltage options of 24/28V, it can efficiently power a variety of electrical equipment and supplies. The hardwired plug type and chassis mount make installation convenient and secure. With a maximum operating temperature of 85°C, this power supply from Standard Power Inc. is a durable and dependable choice for businesses and industrial applications.