HiLetgo 3pcs RC Servo Tester 3CH Digital Multi ECS Consistency Speed Controller Checker Adjustment Steering Gear Tester CCPM Master for RC Helicopter Car Boat
- 1.There are 3 modes to check servos or ESC:.
- 2.Manual mode: turn the knob with different speed, check the reaction time.
- 3.Neutral mode: make the servo go back to the neutral point..
- 4.Automatic "window wiper" mode: make the servo swing like a window wipers in the biggest angle..