40A ESC Brushless Sensored Brushless Speed Controller For RC Drone Airplane Feature: 100% brand new Safety protection, no matter where the throttle is, the motor will not rotate when connected to the battery. Throttle calibration function, the throttle range can be calibrated to be compatible with different transmitters. Support a variety of program methods, emitting rod, LED program card. ESC is very easy to operate from home or on the fly. Compatible with lithium and nickel metal hydride batteries. Full protection, low pressure cut off protection/overheat protection/throttle signal loss protection. Suitalbe for: RC Remote-controlled UAV, Helicopter, FPV, Etc Specification: Item Type: Brushless ESC Material: Electronic Components Color: As Pictures Shown Output capacity: continuous current 40A, short-time current 55A (not less than 10 seconds) Plug: XT60 BEC: Yes BEC output: 5V@3A (linear regulator mode - linear mode) Power input: 2-4 lithium batteries(Not Included) Maximum Speed: 210,000 rpm for 2-pole Motor, 7000 rpm for 6-pole Motor, and 35,000 rpm for 12-pole Motor Size: (Approx) 68x25x8mm Package List: 1 x Brushless ESC