This is an AR6270T 6-channel Carbon Fuse telemetry receiver from Spektrum. The AR6270T receiver is a fully-featured, 6-channel receiver with integrated full-range telemetry. It includes built-in connection ports, for RPM or Flight Pack Voltage and Temperature sensors as well as an X-Bus port for even more telemetry options. You don't need any sensors to receiver Flight Log data or receiver pack voltage telemetry. The AR6270T was designed for use in carbon fuselage aircraft and includes a special antenna design that helps it brush off RF limitations by letting you route the antennas through the side of the fuselage to the exterior of the aircraft.