Description:_x000D_The signal terminal needs to be input with one 50 HZ square wave, then the duration of high level pulse, which is used to control signal cycle, can control speed and forward/backward rotation as well as stalling. The duration of high level corresponds to a speed. When high level is 1ms - 1.5ms, servo rotates forward(the rotate speed is the fastest when it is 1ms, the higher the lower, servo will stop rotating when reaching 1.5ms). When high level is 1.5 - 2ms, the servo rotates backward(The servo stops rotating when reaching 1.5ms, when the duration is closer to 2ms, the closer, the faster. The backward rotation speed, the fastest when reaching 2ms)_x000D_This servo carries meso-position adjustment potentiometer(it can only be seen by peeling off the outer cover and circuit board). We can set high level pulse at 1.5ms to observe that whether servo stops rotating. If it doesn't stop rotating, we keep adjusting the potentiometer until it does._x000D__x000D_Features:_x000D_1. High quality and fine workmanship, rust-proof, durable and practical._x000D_2. Easy to install, used to model aircraft / Cars / Robots._x000D_3. Smooth edge design, good performance, stable and sturdy._x000D_4. Compact & Save Space: Reasonable size and lightweight, portable for carrying and using._x000D_5. The steering gear with a median adjustment potentiometer (open shell to pry the circuit board to see), debugging can be high pulse is set at 1.5 ms to observe the steering gear stall, if you stop and turn on the regulation potentiometer until the stall so far, so the zero._x000D__x000D_Specification:_x000D_Condition: 100% Brand New_x000D_Item Type: 360 Degree Continuous Rotation Servo Motor_x000D_Material: Metal + Plastic_x000D_Color: Black_x000D_Product Size: Approx. 40.8*20*39.5mm / 1.6*0.8*1.6inch_x000D_Weight: Approx. 52g / 1.8oz_x000D_Torque: 5.5kg/cm (at 4.8V)_x000D_Uses: Aircraft models, Car models, Robots, etc._x000D_Working Voltage: 4.8V-6V_x000D_Operating Temperature: 0C - 60C_x000D_Current Usage: