Servo control arm/horn
GT power 1-3 Servo/Esc tester checker Specifications: 3 modes to check servos or esc Manual mode--turn the knob with different speeds to check reaction time. Neutral mode -- Make the servo go back to neutral point. Automatic "window wiper" mode makes the servo swing like window wipers in the biggest angle. Can connect / test 3 servos simultaneously. Can connect 1-3 ESC to test and compare their reaction time respectively.
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