From Hitec:
Designed specifically for multirotors, Hitec’s new ENERGY ROTOR speed controls possess the same reliability and quality you have come to expect throughout our entire ENERGY SPORT product line. These must-have brushless controllers provide smooth and accurate throttle linearity for all your flights. Flashed with the pilot-preferred BLHeli firmware and utilizing ONESHOT synchronized communication with your flight controller, the ENERGY ROTOR speed controls achieve lightning-fast response and interaction with your model. Propel your rotor to Hitec heights!
Features:
- BLHeli Firmware
- Pre-set ONESHOT Synchronization
- Wide RPM Motor Range Compatibility
- New Generation MOSFETs for Increased Efficiency
- Smooth, Linear Throttle Response
- Fast Refresh Rate up to 600Hz