Ultra Control 3D 20A 2S-4S OPTO
Ultra Control 3D 20A 2S-4S OPTO

Ultra Control 3D 20A 2S-4S OPTO

P/N: S3057


The Graupner Ultra Control 20A 3D has been designed for the more demanding control and response needed when flying 3D multirotor such as the Alpha 300Q. Manufactured with high-quality components and optimized software it only weights 15 grams (with cable). The Ultra Control 20A 3D uses the latest BL-Heli software and is currently the only flight controller using a 50 MHz Silabs processor. The powerful Silabs processor provides a higher clock rate therefore allowing higher maximum speeds and precise rotational timing. The special SO8 FET amplifiers are distinguished by their low internal resistance therefore providing higher efficiency and cooler operation. The Ultra-Low ESR capacitors guarantee high operational safety during superfast rotational reversals and fast startup. The high precisions resistors will guarantee accurate and consistent operations during motor starts in Damped Light mode.

The Graupner Ultra 20A 3D will automatically detect normal PPM and OneShot controllers. By default, the controller is optimized to utilize the Graupner GR-18 receiver and flight controller

The Ultra Control 20A 3D can programmed and updated with the Graupner USB updater (7168.6) using the BL Heli desktop software.


  • Open Source BL Heli Software 14.2
  • 50 MHz Silabs Processor
  • Power SO8 FETs Amplifiers
  • Internal resistance typical 1.6 mOhm
  • Special FET Driver
  • Ultra Low ESR Capacitors
  • Compatible with PPM and OneShot
  • Programming and firmware updates with BL-Heli software
  • Optimized for GR-18 and 3D multirotors


  • Graupner Ultra Control 20A 3D
  • Manual