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Just found out Spektrum is upgrading to SR215 & SR315 have no more Bind Plugs now a button ,, and adding a Battery port for us Guys running Gas Boats 
with my electrics I could use a SR210 But with Gas SR310 was needed for the AUX Port for battery can save $$$ on Receives using the SR 215 now
Russ
with my electrics I could use a SR210 But with Gas SR310 was needed for the AUX Port for battery can save $$$ on Receives using the SR 215 now
Russ
