How can I reset the Perfex KT-18 transmitter?This entry was posted in All Categories Troubleshooting on December 22, 2017 by Takuji Fukumoto In order to reset all the parameters of the Perfex transmitter, please follow the steps below: Make sure that the steering wheel and throttle trigger are at the neutral position. Push and hold the backward trim button “B” and power on the transmitter. Hold “B” down until you hear a beep tone and the LED lights up.