Features: 1.Equipped with 3 way computer fan control, which can monitor and control the temperature of computer and other equipment. 2.Intelligently test the computer temperature, the controller can automatically increase or decrease fan speed when CPU is too hot. 3.When the computer is standby or the detection point is within the standard range, the fan speed is automatically reduced to reduce fan noise. 4.The fan speed can be reduced or increased by manual setting to adjust the computer temperature. 5.Manually set the alarm temperature, the range is from 40 to 90 degrees. When temperature exceeds this range or the fan is stuck, an alarm will sound automatically, which can effectively avoid computer hardware damage due to overheating. specification:Item Type: Computer Fan Controller Material: ABS and Printed Circuit Board Model: 33C03-RTK Installation Position: Chassis Optical Drive Position Power Supply Interface: Large 4 Pin Interface Fan Interface: 3 Pin Interface Controllable Fan: Can Control 3 Groups of Fans Cable Length: Approx. 60cm / 23.62in Luminous Color: Colorful Input Voltage: 5V/12V Output Voltage: 5V-12v Power: 10W PackageList:1 x Front Panel 4 x Screw 1 x Sticker