Overview of Jeti SPIN Opto Controllers:
When high voltage battery packs are required for your aircraft it is necessary to use an "Opto" controller. Opto controllers do not have a BEC (battery eliminator circuit) to power your radio receiver and servos. A separate power supply is required: SPIN Opto controllers are programmed either with your transmitter or with the "SPIN BOX", just like the regular SPIN controllers. The SPIN Opto controllers have a dedicated programming plug that simplifies program setup and data retrieval.