Feature:1. With security arming function. Regardless of the position of the throttle lever, the electric motor will not rotate when the battery is connected.2. The ESC is compatible with lithium batteries and Ni‑MH batteries, making it more convenient to use.3. Provides comprehensive protection such as low-voltage cut-off protection, overheating protection, and throttle signal loss protection.4. Built-in high-efficiency and high-power 5V/3A BEC to improve working performance.5. 50A ESC uses high‑quality electronic components to ensure efficient operation.How to Use:Speed controller programming instructions1. Enter the prom, use the simple option M to connect the throttle on the transmitter, and move the throttle lever to the position that is completely in line with the throttle, but don't move it.2. Connect the battery, the controller will start beeping for 3 seconds after the program is initialized. When finished, move the throttle stick to the lowest position.Specification:Item Type: Red Brick ESCProduct Material: Electronic componentProduct Color: RedProduct Weight: Approx. 48g / 1.7ozContinuous Current: 50APeak Current: 60ABec Output: 5V / 3AApplicable Battery: 2-3s Lithium Battery/4-12 Ni-mh BatteryApplication: For RC Drone/FPV Drones Package List:1 xESC 1 x Manual