SHINA Emax BLHeli Series 60A UBEC Speed Controller ESC Multirotor Multicopter 60amp 100% brand new and high quality Alarm to help you find the devices: keep the throttle on FULL OFF position for a while, the ESC will beep Special designed for multirotors, and compatible with fixed-wing aircrafts and helicopters Dimension: 73 x 36 x 12mm BEC output: 5A/5V