Welcome to our store! This unique 50A ESC starts the motor immediately upon battery connection. Easy and convenient to install, reliable, and durable. Waterproof design, suitable for underwater thrusters, RC boat models, etc. Blocks PWM signal, powers on to spin, slow start after 5 seconds to reach maximum speed. Wonderful replacement for old or broken parts, direct fit. Specifications: Condition: 100% Brand New Item Type: ESC Material: Electronic Components Color: Black Voltage: 7-24V Continuous Current of ESC: 50A Maximum Current: 60A (within 10 seconds) Drive Mode: Block PWM signal, power on to spin, slow start after 5 seconds to reach maximum speed Application: No potentiometer, throttle, remote control required Purpose: Underwater thruster, boat model accessories This unique 50A is technically not intended to be called an electronic speed controller. It has no signal line, so it cannot adjust the motor speed, just plug in the battery and the motor starts immediately. The brushless controller can be used in some devices that do not require speed regulation. Block PWM signal, power on to spin, slow start after 5 seconds to reach maximum speed Package Includes: 1 x 50A ESC Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best after-sales service.