The OKY3496-7 is a PWM (pulse width modulation) controller manufactured by OKYSTAR, which has a rated current of 15A and voltage range of 6 to 90V. It is a device used to control alternating current, and is specifically designed to generate pulse width modulation signals that can regulate the speed and torque of electric motors. This module is embedded with various protective features, such as over temperature protection, over current protection, and short circuit protection, to ensure safety and stability while it is in use. This PWM controller is an ideal choice for applications like adjustable motor speed control, fan speed regulation, and LED dimming control.