1、Dimensions: Circuit Size 65x65x15mm/2.56x2.56x0.59in. Positioning Hole Center Distance 56x56mm/2.21x2.21in. Diameter 3.2mm/0.13in. 2、2 Channel: Dual independent temperature control, alternately display the temperature of the two channels. 3、Flexible Control: The low speed of the fan and the temperature control temperature zone are set by the buttons, the control is flexible, and the setting range is large. 4、Alarm Function: DC10‑60V wide working voltage range, the switch can be set to stop the alarm function. Alarm speed: lower than 375rpm. 5、Speed ​Measurement: 10‑9990 rpm, if the speed is greater than this, it will always display 999, the resolution is 10 rpm, and the display unit is 10 rpm. 6、Control Ability: Not limited by the fan current, but the pin current of the fan interface on the board should not be greater than 3A current Item Type: PWM Fan Speed Temperature Controller Material: PCB Working Voltage: DC10-60V (must be equal to the fan voltage, if you use a 12V fan but supply 24V, it will burn the fan) Working Current: Control board working current 35mA (12V) 22mA (24V) Control Ability: Not limited by the fan current, but the pin current of the fan interface on the board should not be greater than 3A current. When using a fan with a higher current, please connect the fan power cable directly to the main power supply! Control Output Range: 10%-100% (this is only the signal output range, the actual situation depends on the fan performance) Temperature Probe: NTC 10K B=3950 Temperature Measurement: -9.9°C-99.9°C, error 2°C (1% probe within 70°C) 3°C (above 70°C) Temperature Control Temperature Zone Range: Acceleration temperature 5-94℃, full speed temperature 10-99℃ Speed Measurement: 10-9990 rpm, if the speed is greater than this, it will always display 999, the resolution is 10 rpm, and the display unit is 10 rpm (the speed measurement is designed according to the common 2-pole signal fan, and most fans are 2-pole signal) Stop Alarm Speed: Lower than 375rpm Circuit Size: Approx. 65x65x15mm/2.56x2.56x0.59in Positioning Hole Center Distance: Approx. 56x56mm/2.21x2.21in Diameter: Approx. 3.2mm/0.13in 1 x Module 2 x Cable