Rcexl Servo Tester / Simulator will allow you to test your servos without the need of a radio/receiver.
How to use: 1. Press the “Set” switch to put the device in AUTO or Manual mode. After battery and 1 to 3 servo connected to the device you decide the mode you will like to use. 2. In Auto mode function the GREEN LED will lit; device will generate automatically full range pulse and servo/s will start to swipe from full CW to CCW continuous, the digital display will show the numbers going from one end of the spectrum to the other. 3. In Manual mode the RED LED will lit; device will allow you to move the servo to your desired position by rotating the round knob, display will indicate the pulse width at that position.