Feature: 1. With manual pulse width adjustment, neutral point pulse width output and automatic pulse width adjustment functions, more functions. 2. It can easily detect and set the virtual position, jitter and neutral position of the server. Applicable to RC car model, airplane model, ship model steering gear. 3. Two sets of steering gears or ESC can be connected, single‑chip microcomputer control, good stability and high accuracy. Rotate the knob to detect the steering gear. 4. If you connect an electronic speed controller (with or without a brush), you can get rid of the remote control device for manual speed adjustment for test adjustment. 5. The performance of the speed controller or motor is very practical, so there is no need to connect the remote control and the receiver tediously. It is equivalent to the function of a "manual receiver", which simulates the rudder of the transmitter through the knob. Specification: Item Type: Servo Tester Material: Plastic + Electronic Components Weight: Approx.9g/0.3oz Output: ≤15mA(5.0) Input: DC 4.2-6.0v Neutral Point Output Signal: 1.5ms±0.5ms Pulse Width Adjustment Mode: Automatic/Manual Adjustment/Automatic Neutral Point Signal Output Applicable to: RC Car Model, Airplane Model, Ship Model Steering Gear. Package List: 1 x Steering Gear Tester Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.