GR-18 9CH Airplane Helicopter Multirotor Gyro Telemetry ReceiverOverviewPower and simplicity are the hallmarks of the Graupner GR-18. Engineered with an integrated flight controller for multicopters, flybarless helicopters and an airplane 3-axis stabilization gyro, this is one of the most advanced 2.4 GHz receiver ever made by Graupner. The GR-18 is a long-range receiver using the Graupner HoTT protocol to provide real-time telemetry data of altitude, signal strength receiver voltage and temperature all to assist you during flight to enhance situational awareness and safety.Set up a multicopter, airplane or helicopter models, telemetry thresholds or flight controller settings easily and wirelessly using any Graupner HoTT radio transmitter: no computers or programming boxes necessary! Need to make a change to the PID or adjust the gyro? Simply land and make on-the-spot changes at the field or even in the air during flight! The GR-18 can be expanded with additional telemetry modules (GPS, OSD, ESC Telemetry, etc.) for continual improvement of your system’s reliability and performance.FEATURES Airplane Mode: three axes gyro stabilization with remote gain/deflection control Helicopter Mode: Flybarless controller with remote gain control Multicopter Mode: Quad X, Quad +, Hexa V, Hexa I, Tri L, Tri R Ultra-fast gyros and accelerometer sensors for fast and crisp response Wireless setup of all controller features and functions Built-in telemetry for altitude, signal strength, temperatures and receiver voltage Upgradable firmware using Graupner Firmware Update Studio INCLUDES GR-18 3XG+3A+VARIO Receiver Manual Channel 9 channels Frequency 2400 to 2483.5 MHz Modulation 2.4 GHzFHSS Temperature Range 5 to 158˚ F -15 to 70˚ C Operating Voltage (2.5) 3.6 to 8.4V Current Consumption 70.0 mA Antennas x2 5.71 in 145 mm Amplifier O Size 1.81x0.82x0.55 in 46 x 21 x 14 mm Weight Approx 0.49 oz 14 g Range 6561 ft (1.2 mi) 2000 m