30 A BLHeli‑S ESC OPTO, 2–4 S

Product Overview

This Electronic Speed Controller (ESC) is a slim, lightweight, and high-performance module tailored for FPV drones compatible with 2–4 S LiPo power sources and supporting modern digital protocols like DSHOT, Oneshot, Multishot, and PWM. Preloaded with BLHeli‑S firmware and a powerful microcontroller, it delivers smooth throttle response, near-silent motor operation, and exceptional precision.

Key Features

• BusyBee2 Microcontroller (EFM8BB21F16)

  • Runs at 48 MHz—twice the speed of older BLHeli-S ESCs, enhancing responsiveness and control precision up to 500k eRPM.
    

• Multi-Protocol Control

  • Automatically supports and switches between PWM, Oneshot125, Oneshot42, Multishot, and DSHOT for wide compatibility with most flight controllers.
    

• High-Fidelity PWM Drive

  • Utilizes 36 kHz hardware PWM—more than double the rate of older ESCs (16 kHz), resulting in ultra-smooth motor output and quiet operation.
    

• Compact, Lightweight, and OPTO

  • Slim form factor (approx. 28 × 14 × 5 mm), weighing just ~5 g (without motor wires). OPTO means it has no integrated BEC, so a separate 5 V supply is required for your flight controller.
    

• Adaptive and Efficient

  • Features adaptive timing and synchronous rectification to boost efficiency, alongside regenerative (active) braking for precise motor control.