Features Stable Speed Control: Utilizes pulse width technology for stable speed and increased force at low speeds, providing powerful and reliable performance. Multiple defend Features: Equipped with short circuit, over current, and over temperature defend cut off devices, ensuring reliable and safe operation. Soft Start Function: Incorporates a soft start device to eliminate excessive motor starting current, promoting stability and reliability. Complete sign Isolation: High and low voltage signs are completely isolated, enhancing the safety of the motor speed controller. Corrosion-Resistant Design: Constructed from high-quality aluminum alloy, offering lightweight and strong corrosion resistance for long-lasting durability. Specification: Item Type: DC Motor Governor Material: Aluminum alloy ModelDC 0~220 V Package List: 1 x DC Motor Governor 1 x Knob Note: betweendiv>1. The default PWM sign level is 5V, the sign frequency is above 1KHZ, and the load capacity is above 0.5MA.between/div>betweendiv>2. The 5V level does not need a series resistor to be input in the PWM port, the 10V level PWM is input from the 0‑10V port or the series 10K resistor is input in the PWM port, the 12V level series 3.9K resistor is input from the 0‑10V port or the series 13.7K resistor input in PWM port, the 24V level string 16.8K resistor input from 0‑10V port or string 27K resistor input in PWM port.between/div>betweendiv>3. The product is a DC motor speed controller, which can only be used for DC motor speed control, non switching power supply, and cannot be used for power supply of other equipment.between/div> Package List 1 x DC Motor Governor 1 x Knob