The Hobbywing Signal Coupler - 30850200 is built to smooth out signal issues when linking ESCs to flybarless controllers. It helps the flight controller accurately read RPM feedback from the ESC and reduces telemetry interference and ground reference differences. The unit works with various ESC makes, not limited to Hobbywing, and its small footprint of 45.4x11.6x7.7mm and 2.1g weight means it fits into compact builds without much added mass.
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