blowers controls allow manually adjust the speed and noise level of the fan. These industrial instruments are designed to adjust fan speed relative to the air temperature, which is the reason for the given relatively low temperature range. Pyramid designed fan controller comes nicely packaged in, what else, but a pyramid shaped package having clear sides that allows one to see the fan controller without opening it. The package may also contain specifications and lets you know what color of leds the fan controller uses. Alarm system with flash lights that produces sounds though not horribly loud will definitely catch the notice of all. A fan control is the perfect accessory to run a powerful fan at lower speed on day-to-day use such as web-surfing or email. When gaming, one can unleash the full cooling power just with a slight movement of the wheel with the simple application of fan controller.