3ch Sport Surface ReceiverKey Features Streamlined design in a compact and lightweight hard case Bind button eliminates the need for a bind plug SmartSafe Failsafe and Preset "Gas Mode" Failsafe options Outstanding range and 5. 5ms capable DSMR technology Ideal for nearly any surface RC model Overview Built around frequency agile DSMR technology, the SR315 receiver delivers superb range and response, especially in noisy RF environments where a solid 2. 4GHz link is crucial.