Trail Tech's Universal Fan Kit is easy to install and operate. Features premium gauge with backlight and volt meter. Custom adjustment of temperature trigger point. Recommended for: Radiators, oil coolers, transmission coolers, power steering coolers, and differential coolers. No cutting of fluid lines. 30 watt draw. Detailed Specifications: Temp sensor: -40°C/F - 300°C / 575°F. Fan air flow: 147 CFM. Power requirements: 10.5 to 14.5V DC only. Amp draw: 3 amps. Watt draw: 30 watts. Physical dimensions: 210 x 120 x 85 mm (8.2 x 4.7 x 3.3"). Physical weight: 23 ounces (652 grams). Screen size: 23.7 x 13.6 mm (0.93 x 0.53").