First, "24V DC Cooling Fan" must be able to provide adequate displacement (i.e., speed), in the cooling device at a high temperature of hot air when the hot air temperature is relatively low, or relatively small when the hot gas flow, "24V DC Cooling Fan"is to do the reverse work. Secondly, when installing sensors must choose a good position right, ensuring placed in the proper position. Try to make the sensor directly on the surface of the clamping need heat. In operation, the temperature control of the "24V DC Cooling Fan", if the heating temperature is high, the regulator will experience a faster rate, while at lower temperatures, in a lower speed, and higher in these intermediate lower, the fan speed will be almost no change in temperature.