Motor Type: DC Motor Model Number: 4 Wire Temperature Controlled PWM Fan Speed Governor with Accessories Application: Computer Case PWM PC CPU Fan: Thermistor PWM Temperature Probe Speed Controller Board Thermistor PWM Fan: 12V CPU Fan Temperature Control PWM Speed Controller Module Alarm Buzzer Sensor: 12V 4-wire High-Temp Alarm Buzzer PC Computer Buzzer High-Temp Alarm: Application: Computer Case pwm fan controller: pwm controller fan pace controller: pwm controller 12v fan controller 12v: temperature fan speed controller motor velocity controller: 12v fan controller module PWM Fan Speed Controller: Fan Temperature control Alarm Buzzer Fan Speed control: 12V 4 Wire temperature management PWM fan velocity regulator Material:PC+Metal colour:Blue Package Contents: 1 x Speed controller 1 x Temperature probe 1 x Buzzer Only the above kit content, different item are usually not included. Note: Light taking pictures and various exhibits may cause the color of the object in the photo just a little various from the real thing. The dimension allowed error is +/- 1-3cm.