Motor with closed-loop technology for constant speedsPure wings 3 140 mm PWM high speed has a closed loop motor. This technology is comparable to the cruise control in cars. If the fan works against a resistance, for example against a fan screen or a radiator, it rotates slowly. A closed control circuit continuously monitors the current fan speed and increases it to the target speed if required. As a result, the Pure wings 3 140 mm PWM high speed always work with the desired speed, no matter what air resistance.For a never before air pressure in its classA newly designed outlet on the fan frame minimizes air leakage. This is particularly noticeable in the use of Pure Wing 3 140 mm PWM high speed on radiators. Even the fan blades are optimized to achieve an even higher performance: Their angle is adjusted for even more air pressure. Pure wings 3 140 mm PWM high speed enable extraordinary performance.Optimized fan blades for high pressureWith a remarkably high air pressure of up to 2.44m