1. Adopt 12-bit high-precision magnetic encoder sensor. Compared with the potentiometer, the is expanded to 360degree , and the resolution is increased by 4 . Since there is a space between the magnetic encoder and the magnet, there is no friction, so the service life of the servo is effectively extended2. The shell adopts the structural design of higher strength engineering plastic shell and double-axis low shell, optimizes the plane spacing of the double-axis rudder plate, and the overall structure is more compact, which can make the appearance of the product more beautiful3. One-key calibration of the median, 360degree installation at any position, one-key to the current position to the median, very convenient for installation4. The two-way feedback servo can feed back information such as position, load, speed and input voltage in real time, and control it at all .5. When the voltage is 12V, the can reach 30kg.cm, which can be used to four-legged, six-legged, robotic arm and other robotic projects that require multiple steering gears, and can easily handle peopleProduct Type: ST3215 Servo Bus ServoProduct : 30kg.cm@12VRotation : 360degree (0-4095)Position sensor resolution: 360degree /4096Mechanism limit : Working voltage: 6~12.6VGear form: high precision metal gearNo-load speed: 0.222sec/60degree (45RPM)@12VEncoder type: 360degree magnetic encoderID range: 0~253 rate: 38400bps~1 Mbps (default 1Mbps)Feedback: Position; Load; Speed; Input voltageNo-load current: 180mAStall current: 2.7AKt constant: 11kg.cm/AColour:blackMaterial:Plastic + MetalSize: 45.22 x 37.25 x 24.72mmPackage Contents:1 x 30kg serial bus servoOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.