Although they are only 5 channels, they are great for short haul, where bringing out the big tx is not needed. These transmitter are the stock tx that come with most of the spektrum based bind-n-fly micro series product, like the Blade MSR 120SR MQX MCX2 MLP4DSM 5 Channel 2.4Ghz Transmitter Radio . They are short range transmitters, and are made for micro vehicles ( like a 250 quad ) in close range only. If you plan to use FPV or are going to extend your range, we HIGHLY recommend upgrading to a full range and capacity transmitter. This unit is fully compatible with all Spektrum dsm2 dsmx transmitters and receivers.