HobbyStar 120A ESC OPTO High-Voltage

SKU: 361-21-120

Availability: In stock




HobbyStar aircraft ESC's are top-of the line, full-featured ESC's at a competitive price.  High-voltage versions support 6S-12S input to reliably power your large-scale plane.  Constructed using only the highest-quality components and are encased in a beautifully machined heatsink housing to help keep operating temperatures in check.  Opto version ESC's allow you to run a separate, external BEC or a separate receiver battery in demanding applications. Integrated anti-spark circuitry eliminates sparking when connecting battery to ESC.  Includes mounting bracket for clean, sturdy installation that still permits ESC to be removed if necessary.



  • Data logging system such as temperature, voltage, current, and RPM
  • Extremely low internal resistance
  • Advanced Governor Mode and soft start
  • Power arm protection, over-heat protection, low-voltage protection and lost-signal protection
  • Secondary sub-menu setting by the LCD program card or your PC
  • Super smooth and accurate throttle linearity
  • Support for most motors, including high RPM motors
  • Programmable motor timing
  • Anti-spark circuitry eliminates spark at battery connection
  • Utilizes new smaller MOSFET technology to minimize weight
  • Aluminum finned heat sink
  • Programmable throttle input range


  • Current: 120A Continuous, 150A burst (10s)
  • Input: 18-38NiCd/6-12S LiPo
  • OPTO, no BEC (external BEC or RX battery required)
  • Dimensions: 65x46x17mm
  • Weight: 120g


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which program card does this ESC need to adjust timing?
Here is the link to the correct program box for the opto esc.

RCJuice answered on March 9, 2020