From Kyosho Japan: Functions automatically once transmitter is registered to the receiver. (Comes pre-registered at time of shipment). New design transmitter features built-in antenna that delivers more effective signal emission. Transmitter can be paired and used with your second or third aircraft. Advanced design includes two special servos, receiver, motor control amp and gyro in an ultra lightweight structure. Fitted with pre-painted lightweight scale body. Apply your choice of the red or blue stickers included. Training skids allow one-touch installation of the training safety bar. Cored motor delivers plenty of torque to the main rotor while a coreless motor produces optimal response from the tail. Transmitter features built-in battery charger that can charge a spare battery while being used for flight control. Selected flight style mode (Mode I or Mode II) is displayed on the LCD. Switch Expert Mode ON/OFF with a push of the elevator stick that uses a dual rate function to increase or decrease aileron and rudder angle. Transmitter can be used with both MINIUM AD series airplanes or helicopters. **Cannot be used with 3-channel MINIUM airplanes. Swash plate mechanism enables control of movement around the roll and pitch axis, just like large size helicopters. Inclusion of gyro also provides sure control of the tail. Lightweight structure provides optimal strength and flexibility to realize an easy-to-fly, robust and user-friendly machine.