Traxxas TQ 4-Channel 2.4GHz Radio System.
             Transmitter and receiver

          IT Automatically locates and locks onto an available channel
            eliminating the  crystal and channel confilcts
          Fail-safe circuitry protects against signal loss if transmitter
            batteries are depleted or if transmitter is switched off
          4-channel micro receiver installs easily in any
            application and features two steering servo inputs for dual servo
            use
          Two position switch for channel 3, three-position switch for channel
            4 for full compatibility with Traxxas models equipped with
            reversing transmissions and T-Lock differentials
          Additional channels can operate scale functions, rear-steer options
            and other custom controls in any R/C model
          Simple analog trim controls, no programming required no servos included