Features 1、This product adopts PWM stepless speed regulation, accurate control and low noise. 2、With a wide operating voltage range of 12V-50V, it is suitable for more environments. 3、Using dual MOS tubes, larger heat dissipation area, smaller on-resistance. 4、Made of high-quality materials, strong and durable, has a long service life. 5、Small size, easy to carry and store, convenient to use and with good performance. Specification Item Type: Motor Speed Control Module Material: Plastic + aluminum alloy Model: L0577 Rated Current: 10A Maximum Instantaneous Current: 20A Speed Adjustment Range: 5%‑100% Speed Regulation Method: Potentiometer (linear) Control Frequency: 25KHZ Knob Cord Length: Approx. 20cm / 7.9in Module Size: 75 x 45 x 28mm / 3 x 1.8 x 1.1in Mounting Hole Center Distance: Approx. 73 x 40mm / 2.9 x 1.6in Package List 1 x Motor Speed Control Module