Where you want to extend the angle with a remote control, such as (robot arm, homemade sailboat) Note: Some servos meet the limit plate before it reaches 180 degrees. Do not perform hard operation and cause the motor to stall. The steering gear reversal is to give the complementary signal of the steering gear, for example, it is currently 1500, and the motor sets the middle position. At this time, if the steering gear is rotated 9 degrees counterclockwise, the signal of 1600 should be given, but the reverser changes it It is 1400 so that the steering gear rotates 9 degrees clockwise. Please note that this is the extension of the remote control servo angle, which originally controlled 90 degrees, and expanded to control the 180 degree. It does not directly change the 90-degree steering gear to 180-degree. This is an important point. Parameter: Adapted voltage 3.6-16V (more than poking with high voltage servo) 180-degree servos supporting 500-2500us Board size: 25x9mm One 3P cable (10cm in length) and one plug design, compact and easy to use The steering gear is usually 180 degrees, but the remote control can only turn it 90 degrees Principle: The remote control pwm output is: 1000-2000us; (At this time, the steering gear can rotate 90 degrees) This device expands it to 500-2500us to achieve the purpose of rotating 180 degrees Premise: The steering gear can rotate 180 degrees within the range of 500-2500us. Material: Composite material colour: As Shown Package Contents: 20 x Servo Expander 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.