Hiwonder 20KG Digital Servo Full Metal Gear with 20kg High Torque, Waterproof for Robot RC Car DIY LD-27MG,Control Angle 270: Maxedbuy.com

<b>Specifications:</b><br /> Weight: 65g(2.32OZ)<br /> Dimension: 40*20*40.5mm(1.57*0.78*1.59inch)<br /> Speed: 0.16sec/60°(7.4V)<br /> Torque:20 kg·cm (277.6 oz·in) @6.6V<br /> Working Voltage: 6-7.4V<br /> Min Working Current: 1A<br /> No-Load Current: 100mA<br /> # Spline: 25T(6mm in diameter)<br /> The servo wire: 30cm(11.8inch) in length<br /> <br /> <b>Control Specifications:</b><br /> Control Method: PWM<br /> Pulse Width: 500~2500<br /> Duty Ratio: 0.5ms~2.5ms<br /> Pulse Period: 20ms<br /> <br /> <b>Wire Layout:</b><br /> Red Wire: +<br /> Black Wire: GND<br /> White Wire: PWM/Signal <br /> <br /> Please make sure that the duty cycle of the controller you are using conform to our specifications, otherwise the servo can't turn up to claimed degree<br /> <br /> <b>Package Contents:</b><br /> 1 x Digital servo<br /> 1 x Servo horn kit(as shown in the figure)<br /> <br /> If you have any questions, please feel free to contact us, we will help you as soon as possible<br /> <br /> <b>Note:</b><br /> Please be sure to avoid locked-rotor when using servo, locked-rotor means that artificially or machine obstructs the servo to rotate normally, the locked-rotor will lead to internal current increased to more than 7 times and the temperature increases, servo will burn out.<br /> <br /> Notice for use:<br /> 1. It's recommended that use lithium polymer battery with high rate discharge(min 5C), please don't use dry battery.<br /> 2. Please use a short and thick power cord, don't use Dupont cord<br />