Compact size for equipment where space is limited. The frame and impeller are made of UL 94 V-0 grade plastic, safe and flame retardant. Operating voltage range 100V - 240V (50/60Hz), AC and DC, constant speed at different voltages. Operating temperatures from -25°C to 70°C and storage temperatures from -40°C to 80°C. Ball bearing design provides a reliable life expectancy of 70,000 hours at 40°C.