Features: The remote Digital Servo Tester allows synchronized control of 4servos with precise 2us accuracy, ensuring ESC consistency and compatibility across remote helicopters, airplanes, & car. Featuring manual/neutral/automatic mode with adjustable pulse widths (50Hz 250Hz), this lightweight tester support 4.8V-6V input for comprehensive servo diagnostics and throttles calibration. Design for remote hobbyists and technicians, it simplifies servo response checks and ESC performances comparisons for both analogs and digital systems in helicopters or remote vehicles. optimizes model performances in workshops or fields by testing servo synchronization, verifying PPM signal stability, and fine tuning throttles output during pre flight inspections. Its compactly ABS construction integrates LED indicators for reals time parameters feedback, enabling precise pulse width adjustments from 800-2200us across multiple remote device configurations. Specifications: Component:ABS Size:Approx.75x38x15mm/2.95x1.49x0.59inch Working voltages: 4.8V- 6V Signal Width: 800 to 2200us Applicable scenario: Model debugging: Suitable for model debugging before flying or driving to ensure the normal operation of the servo and electric control. Package Includes: 1pc remote Digital Servo Tester note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.