The simulator controls the PWM signal to adjust the fan speed according to the execution instructions issued by the CPU of the mining machine.General noise reduction equipment such as: the speed of the silencer is fixed, the temperature of the mining machine is high during the day and the temperature is low at night, and the CPU will continuously generate PWM For signals, if a speed simulator is used.Only a fixed speed can be simulated, and the signals fed back to the CPU will cause conflicts, which will affect the computing of the machine.Type: Full SpeedMaterial: pcbcolour: As shownPackage Contents:5 x Fan SimulatorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.