Cooling fan speed regulator fish tank submersible pump PWM DC motor brushless chassis with brush switch LED dimming _x000D_ _x000D_ _x000D_ Product features: _x000D_ 1. This product can be adjusted with brush/brushless motors/LED light strips!! _x000D_ 2. We use high-performance and high-efficiency professional power chips, with smooth speed regulation and no strict requirements for the power supply voltage range! For example, adjusting the speed of a 12 volt fan and supplying power between 12 and 24 volts is acceptable! _x000D_ The above two points are not comparable to the simple PWM motor speed controllers with square wave generators and MOS switches available on the market. _x000D_ Application scenarios: _x000D_ 1. 12 volt fan speed regulation! Adjust the air volume freely! More silent! _x000D_ Both chassis cooling fans and brute force brushless fans are available. _x000D_ 2. Speed regulation of fish tank submersible pump! The water flow can be adjusted freely, making it quieter! _x000D_ 3. 12V/24V low-voltage LED strip dimming! Smooth and adjustable brightness, no flicker! _x000D_ Product parameters: _x000D_ Length, width, and height: 47 * 30 * 14mm _x000D_ Power supply voltage: DC 12/24V _x000D_ Voltage regulation range: default 5-12V _x000D_ Load current: MAX 3.5A _x000D_ Be careful not to connect the positive and negative poles of the power supply/output incorrectly! _x000D_ The output of this product cannot be connected to batteries! _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_