Welcome to the store! 1. Unique 50A ESC—once the battery is connected, the motor starts instantly. 2. Easy and comfortable to install, reliable and durable for use. 3. Waterproof—ideal for underwater motors, RC boat models, etc. 4. Blocks PWM signal, turn on to rotate, slow start after 5 seconds to reach maximum speed. 5. Excellent replacement for old or damaged units—direct mounting. Product type: ESC Material: Electronic components Color: Black Voltage: 7-24V Continuous current for ESC: 50A Maximum current: 60A (within 10 seconds) Operation mode: Blocks PWM signal, turn on to rotate, slow start after 5 seconds to reach maximum speed Usage: No potentiometer, throttle, or remote control required Purpose: Underwater motors, boat accessories This unique 50A ESC should technically not be called an electronic speed controller. It has no signal line and cannot adjust motor speed—just connect the battery and the motor starts immediately. The brushless regulator can be used in some units that do not require speed control. Blocks PWM signal, turn on to rotate, slow start after 5 seconds to reach maximum speed