WINGONEER Digital Servo Tester, ESC Consistency Tester with Motor Throttle Display for RC Helicopter Airplanes

It can synchronize output control up to 4 servos. It can be used to accurately compare the steering gear control performance of the steering servo output signal to 2us (1 millisecond = 1000 microseconds), allowing you to test whether the steering gear can respond to subtle changes. The PPM signal test function on the display shows that the input PPM signal changes, and the synchronized output of the PPM signal is input to the servo. Energized automatically enters manual mode (manual). 20us 50H analog servo signal cycle, frequency 50Hz. A rotary potentiometer increases or decreases the width of the output pulse. S-1 manual mode (manual) / S-2-bit mode (neutral) / S-3 automatic mode (automatic)