Feature: 1. Safety Power on Function: When the power is on, the motor will not start immediately no matter what position the throttle rod is in, so as not to cause injury 2. Throttle Travel Calibration: Brushless ESC adapts to the throttle travel differences of different remote controls to improve the linearity of throttle response 3. Low Voltage Protection: RC brushless ESC has low voltage protection mode, reduce power or shut down output, default is reduce power 4. Stable and Reliable: Brushless electric speed controller has a delicate speed control feel and speed adjustment linearity. Ultra low impedance high capacity electrolytic capacitors are used for the power input terminals to improve anti interference capability 5. Electronic Components: The RC airplane brushless ESC is made of electronic components material, which is wearable and durable, and can be used with confidence Specification: Item Type: Brushless ESC Material: Electronic Components Color: Black Continuous Current: 40A Maximum Current: 55A (10 seconds) Voltage Range: 4V to16V Applicable Battery: 2 to 4S Lipo BCE Output: 5V/3A Motor Plug: 3.5mm Gold Banana Head Applicable: Fixed Wing Aircraft for T Rex 450, for V2 Helicopter, for F450 Small Quadcopter Drone, Etc.. Package List: 1 x Brushless ESC1 x User Manual