Features: General 5 Wire Brushless Fan Motor Detector and Drive Board offer comprehensive testing/speed control for 310V motors across 8+ brand interfaces including , , and , featuring integrated rise defense and anti overshoot technology. Engineered with 4 1.6MM double layer PCB and 450V/68uF high frequency capacitors, this test board supports AC110V 220V input, DC165V 310V output, and speed adjustment via onboard potentiometer for precise motor diagnostics. Designed for HVAC technicians, motor manufacturers, and electronics engineers requiring stable aging tests, quality process, and troubleshooting of 200W capacity brushless motors in industrial or repair environments. Ideal for workshop motor calibration, production line quality secure, or field maintenance of air conditioning systems using compatible brushless motors from major appliance brands. Enhanced safety features include automatic high electric discharge after power off, 15V short circuit defense , and covered terminals, ensuring strong performances during prolonged motor testing cycles up to 200W capacity. Specifications: Component : Plastic Size: about 85.6x90.8mm/3.37x3.57inch Package Includes: 1xMotor Tester Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.