1. High-precision potentiometer, which can control the servo in real time. 2. Onboard 8-way overcurrent protection interface (0.1.2 interface) can prevent the servo from being burned by excessive current 3. High-resolution PWM signal, MCU can make the control accuracy higher 4. Support manual servo controller/servo reset, switch through function buttons 5. Servo controller accuracy: 0.09 (referring to the PWM minimum change value of 1us) Colour:black Material:Metal + Plastic The eight-way knob servo controller has 8-way PWM digital servo interface onboard. The high-precision potentiometer can realize the functions of servo synchronization controller and servo reset. The controller has 8-way overcurrent protection onboard, which can prevent the servo from being burned by excessive current, making it very suitable for testing and robot development of various servos! Step 1 The servo is connected to the 3Pin servo interface.( is the negative pole, + is the positive pole, S is the signal end) Step 2 Connect the power supply to the controller. (5-8.4V power supply) Step 3 Reset the servo Press the reset button to reset the servo Package Contents: 1 set * overload protective board 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.