Equipped with RC Airplane, Helicopter, Sailplane and Multirotor programming and 250-model memory capacity Patent-pending design lets you change gimbal spring configurations simply by moving a slider switch on the back of the transmitter Wireless trainer link gives flight instructors the option to ''buddy box'' with another DSMX/DSM2 transmitter Features DSMX/DSM2 compatibility and compact footprint streamlined to fit a wide range of RC aircraft models Receiver not included; requires telemetry sensors and telemetry-enabled receiver (all sold separately) to enable built-in telemetry features