Acxico 1 Pcs DC 12v 3a 2pin PWM PC CPU Fan Temperature Control Thermostat Speed ControllerUse 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.Package Included:DC 12v 3a 2pin PWM PC CPU Fan Temperature Control Thermostat Speed ControllerThank you so much for your purchasing from our store.Any question ,please feel free to contact us.Description: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.100% new and high qualityMaterial: Probe temperature: 120 ℃Size:43mm * 18mm * 9mm (without extension of the interface), the fan interface out of 8mmTemperature probe p