The "MAIN BRAINS" of the Micro Jet Series planes, and any other micro aircraft. Built into this little brick are 2 linear servos for elevator and rudder, along with 2 extra ports on the side for independent aileron servos. As well as a 5A INTERNAL ESC. ***Brick comes pre-programmed where the 2 linear servos are in elevator and rudder configuration*** ***Battery wire comes pre-soldered. You have to solder your own motor lead*** SEE YOUTUBE VIDEO FOR HELP SETTING UP: (Link coming soon)