Graupner MZ-12 6 Channel Transmitter Set HOPPING TELEMETRY TRANSMISSION 2.4 GHz technology with real-time telemetry, updatable firmware. 6 channel receiver and update cables included! 128x64 pixel high contrast LCD display screen and user friendly button scroll interface Real-time sensor data?GPS/altitude, temperature, voltage, current, RPM, current draw, and programmable aural announcement/warnings 20 flight model memory; two flight phase settings, switch actuated; multi-binding receiver system for additional servos, reduced wiring runs Smart voice system (Earphone) real time warnings, built in range test and signal strength alarm? Compatible with mz, mx, and mc wireless "trainer mode"