?Flycolor 120A 5S-12S LiPo 50.4V OPTO High-voltage Brushless Motor Speed Controller for Multicopter<br> <br> Features:<br> Over-heat protection<br> Support brushless motor unlimited speed<br> Unique circuit design， strong anti-interference.<br> Multiple protection features: Input voltage abnormal protection/Low-voltage cut-off protection / over-heat protection / throttle signal loss protection/power reduction protection.<br> High power safety performance: wherever the throttle lever is， the motor will not start immediately<br> <br> Specification:<br> Constant Current: 120A<br> Input Volt: 5S-12S LiPo Battery<br> Max Voltage: 50.4V<br> <br> Package Information:<br> Package size: 9 * 4 * 4cm / 3.6 * 1.6 * 1.6in<br> Package weight: 92g / 3.3oz<br> Adhesive taps package<br> <br> Package List:<br> 1 * 120A 5-12S LiPo 50.4V OPTO<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>