DC 12v 3a 4pin PWM PC CPU Fan Temperature Control Thermostat Speed Controller

Automagically control 4-pin CPU fan speed with this nifty chip. Use the included temperature probe to program fan speed based on your heatsink temperature, or use in manual mode to toggle between speeds. Perfect for DIY or repair of LED heatsinks and Peltier cooler chip heatsink fans. Reduce fan speed when full speed is not necessary to eliminate noise and maximize fan life. 1. Do not install the temperature probe for manual control: click / double-click (double-click the speed not too fast) key up / down position. Each time you change the gear, continue to run for 20 seconds is automatically stored stalls, in 20 seconds, No. 2 indicator light will flash rapidly (at this time temperature control is invalid), when the stop flash after that has been stored stalls. The 3/1 indicator will light when the position can not be increased / can not continue to decrease. 2. When the temperature probe is installed, the speed of the manual speed is the initial low speed (bottom line speed). When the temperature exceeds the acceleration temperature, the fan speed increases smoothly with the temperature rise. When the temperature reaches and exceeds the acceleration temperature and acceleration width of the sum (that is, full speed), the fan at full speed. Set the acceleration temperature and the acceleration width parameters see the following setting diagram, Figure 1 2 3 number on behalf of the board indicator light (red), off (white) state in binary order. Normal operation: Click the key to increase the output of the bottom line 5%, double-click the key to reduce the output of the bottom line 5%, change the value after running 20 seconds, until the middle of the light to stop flashing automatically save the parameters. Press the long press button to enter the temperature control setting.