FrSky Tandem X20S ACCESS 900M/2.4GHz Radio Transmitter with TDR6 Receiver Steel Float Switch Simply reverse the polarity of

Simply reverse the polarity of the 12V DC power supply by swapping the positive and negative terminal connections

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the C615 features a built-in mono microphone with noise reduction

minimizing idle time between power-on and productive work

FrSky Tandem X20S ACCESS 900M/2.4GHz Radio Transmitter with TDR6 Receiver Steel Float Switch Simply reverse the polarity ofFrSky Tandem X20S ACCESS 900M 2. 4GHz Radio Transmitter with TDR6 Receiver The FrSky Tandem X20S ACCESS is a professional grade radio transmitter system designed for advanced RC aircraft, drone, and helicopter operations with dual frequency capability supporting both 900MHz and 2. 4GHz bands. This system is extensively used by professional drone pilots, FPV racing enthusiasts, and commercial UAV operators who require redundant communication channels