This drive is suitable for DC Brushless Centrifugal Blower 24V. When is powered on, the motor and fan cannot be plugged or unplugged. Maximum speed: When the number of rotor magnetic pole pairs is 1 pair, the maximum speed is supported at 40,000PRM. Speed adjustment mode: can accept 0-5V (B10K potentiometer speed adjustment) and PWM pulse signal speed adjustment. Centrifugal blower applications:air pump, air purification, soilless cultivation, fuel cell, atomization, buffer air cushion machine, industrial dust removal, air cooling equipment, ventilator, vacuum cleaner, sewing machine, fresh air equipment. Product Name: Centrifugal Blower Drive Rated Voltage: DC24V Voltage Range: DC7-26V Max Rated Current: 3A Current limit: 4A Hall effect angle: 60Degree Suitable for: WM7040-24V 24V Blower Colour:Green Material:PCB+electronic components Different batches may have different appearance, which does not affect use. Package Contents: 1 x Blower Drive Only the above package content, other products are not included. Note: Light reflection 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.