Features: 100% brand new and high quality Working Voltage: DC12V; Circuit load capacity: the maximum output current of each channel is 5A, and the maximum bus current is 9A; Output range: the first channel 20%-100% or 40%-100% (TFL=ON).The second and third channels 10%-100%; Note: The above range is only the PWM range, the actual fan control effect will vary according to different fans. Temperature probe parameters: 50K B=3950; Temperature control temperature zone error: According to the temperature probe error, generally 3-5%; Package Includes: 1x Temperature Controller Board Specifications: Temperature Probe: 50K B=3950 Stop Alarm Speed Threshold: 700-800 RPM Working Voltage: DC 12V Material:PCB Size:12x8cm/4.72x3.15in Diameter:3mm/0.12in Hole Position: 44mmx37mm note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.