Features Versatile Control Signal Input: Accepts a wide range of control signal input voltage from 3.3V to 24V, providing flexibility for various applications. Choose from 32 optional subdivision accuracies for control. Reliable Bipolar Constant Current Drive: Utilizes H-bridge bipolar constant current drive with high-speed optocoupler isolation for secure and efficient motor control, ensuring smooth . Enhanced Safety Features: Equipped with built-in temperature protection and over current protection, automatically reducing heat with automatic half current, ensuring safety and durability of the motor and the module. Optimized Motor Noise Function: Incorporates motor noise optimization function, resulting in reduced noise levels and minimal disturbance, ensuring a quieter and more user-friendly environment. Compact and Portable Design: Compact and lightweight design makes it easy to carry, store, and use, offering excellent performance in a convenient package. Features: 1、Control signal input voltage is 3.3V？24V general, 32 kinds of subdivision accuracy are optional. 2、H？bridge bipolar constant current drive, input signal high？speed optocoupler isolation. 3、Built？in temperature protection and over current protection, automatic half current to reduce heat. 4、Motor noise optimization function, low noise, not easy to disturb the people. 5、Small size, easy to carry and store, convenient to use and with good performance Specification: Item Type: Driver Controller Power Supply Voltage: DC 9-42V power supply (12-24V recommended) Current: The output peak current can get 4.0A (suitable for 57, 42 stepper motors of 1.8NM and below) Cooling Method: cooling or forced air cooling. Use Ocn: (1) Do not place it near to other heat-generating equipment, avoid dust, oil, corrosive gas, excessive humidity and strong earthquakes. (2) Combustible gas and conductive dust are prohibited. Humidity: 40-90%RH Vibration: 10-55Hz/0.15mm Storage Temperature: -20-65℃ Package List: 1 x Driver Controller Note: betweendiv>Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.between/div> Package List 1 x Driver Controller