2.4
While Spektrum equipment has been extremely reliable for the vast majority of owners, static electricity discharges (ESD), caused rare but irritating “shutdowns” when it was used at some CARPET and on-road racing venues in conditions of extremely low humidity. Well, it took some serious detective work to identify and neutralize the culprit, but we’re happy to announce that the Pro Series system incorporates changes that eliminate the problem once and for all.
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