<p>The SPM4650 DSMX SRXL2 Serial Micro Receiver takes the original SPM4648 receiver and adds more value, functionality and fly-by telemetry, while decreasing the size and weight of the already micro sized Spektrum serial receiver. The SPM4650 uses our feature-rich SRXL2 protocol to give pilots a blazing fast serial data connection with up to 20 channels. SRXL2 is a powerful communication protocol that improves bi-directional communication between the radio system and flight controller for added telemetry functionality and flight control configuration right from the pilots Spektrum Transmitter*, all over one signal wire.</p><p><br></p><h4><span style="font-weight: bold;">Features</span></h4><p><br></p><p></p><ul><li>SRXL2 Technology</li><li>Small, Lightweight and Perfect for the DIY Enthusiast</li><li>Wide Voltage Input Range</li><li>Fly-By Telemetry</li><li>Dual Diversity Antennas</li><li>Bind Button installed for Easy Binding</li></ul><p></p>