A dual DC motor driver module is a device that allows you to control the speed and direction of two DC motors using a microcontroller or other control signal. It typically consists of two H-bridge circuits, which are used to drive the motors, and a microcontroller or other control logic that is used to send commands to the H-bridges.

The MX1508 is a specific type of dual DC motor driver module that is capable of driving two motors with a maximum current of 1.5A. It has a built-in PWM (pulse-width modulation) circuit, which allows you to control the speed of the motors by adjusting the duty cycle of the PWM signal. The module also has a dual H-bridge configuration, which allows you to control the direction of the motors by reversing the polarity of the voltage applied to the motors.

Dual DC motor driver modules are commonly used in robotics and other applications where it is necessary to control the movement of multiple motors. They are often used in conjunction with microcontrollers or other control systems to allow for precise control of the motors.

This motor drive module is ideal for use in a battery-powered smart car, toy or robot.

Supply a voltage of between 2V ~ 10V to drive two DC motors or a single 4-wire 2-phase stepper motor. This module will allow you achieve forward rotation or reverse rotation at will, it is possible to adjust the rotation speed using Pulse Width Modulation (PWM). 

A good tutorial on how to use this DC Motor Driver is available here: https://www.instructables.com/id/Tutorial-for-Dual-Channel-DC-Motor-Driver-Board-PW/