Electronic speed variator for \"brushless\" carbon electric motor. Programming by the radio control. Food by Nicd/Nimh or Lipo battery. Automatic engine cut at the end of the battery to continue ordering the radio. Variator of the beak, that is to say that it feeds the receiver on the propulsion battery. Function before / brake for use on plane. Protection against sur-charts, control losses and involuntary starts. Intensity: 30A (35amax). 6 to 12 NICD/NIMH elements. 2 to 4 LIPO elements. Dimensions: 45x25x12mm. Weight: 25g. Supplied with OCP-2 programming card.