Double Sides Brushless ESC 20/30/40/50/60/80A Underwater Thruster RC Car Boat Parts Product information: Bidirectional 20A 2-4S UBEC 2A 5V Bidirectional 30A 2-4S UBEC 2A 5V Bidirectional 40A 2-6S UBEC 3A 5V Bidirectional 50A 2-6S UBEC 5A 5V 60A 2-6S UBEC 5A 5V Bidirectional 80A 2-6S UBEC 5A 5V This product adopts imported components and is tested at full power before delivery. Can be used for vehicles, boats, underwater thrusters. Bidirectional 1: 1 power output, without brake, direct reverse, fast speed and good linearity. No need to calibrate the throttle stroke, plug and play. This product contains UBEC output. Remarks: 1. When using this product, the remote control throttle stick must be in the middle position, otherwise the ESC cannot start. 2. This product does not need to calibrate the throttle stroke. After the ESC starts, if the motor starts to rotate, you can use the remote controller to fine-tune the throttle to stop the motor. 3. This product is not welded at the factory Note: This part can used for rc car and rc boat. This ESC can not program. Package included: 1x ESC