A MOSFET relay module is a device that is used to control the flow of electrical current in a circuit. It consists of a MOSFET (metal-oxide-semiconductor field-effect transistor) and a driver circuit that is used to control the MOSFET. The MOSFET relay module is often used to switch high-power electrical devices, such as motors, lights, and other devices, on and off. It is particularly useful in applications where it is necessary to control the flow of current through a circuit without the use of physical contact, such as in automation, robotics, and other applications. The 0-24V Mosfet IRF520 MOSFET relay module is designed to operate with a supply voltage of 0-24 volts and can handle a maximum load current of up to 5 amps.

This module Mosfet Relay Driver Module, HCMODU0083, is an Arduino breakout board for the IFR520 MOSFET transistor.

The module is designed to switch heavy DC loads from a single digital pin of your Arduino. It can be used to control motors, switch on/off devices and in many other applications involving automation. 

It is capable of delivering output voltage of up to 24V at a maximum of 5A load draw.

It is extremely easy to use.