1. Low power, fast speed, and energy-saving compared to ac motors 2. Comes with complete installation accessories, which can be changed to stepless speed regulation, as well as 3rd or 4th gear button speed regulation 3. Adopting a wide voltage stable driving board, universal voltage of 9-28v, with built-in reverse protection and direct driving function 4. The motors of table fans and often use dc frequency conversion technology, which can more accurately adjust the speed compared to traditional ac motors 5. Optimization of motor internal design to reduce noise caused by mechanical friction and wind resistance, suitable for quiet indoor environments such as offices, bedrooms, etc Product name: brushless motor Voltage: dc9-28v Current: 1-3a Power: 28w (16 inch fan blade) Speed: 1450 revolutions per minute Shaking his head: support Speed regulation: 3-speed button or infinite speed regulation Reverse connection: support Directly use with positive and negative poles: supported Voltage protection: 8-40v protection Color: As Shown Material: Metal Package Contents: 1 set * brushless motor 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.