Transistor MOSFET DC Switch Driver Module, 1 Channel, 5V Logic, DC 24V/30A with optoisolator. for Control Power from Arduino, STM32, Raspberry pi (1 PC - Transistor MOSFET Module)

Item is as described. Works perfectly. Please make sure you know what you are doing when using small electronics.

Does not seem to work, only giving it two stars because I should be able to harvest the MOSFET assuming it works.

Used this with an ESP32 to control a 12v fan. I was able to use PWM to control the speed of the fan. Works great!

Most of these are not opto-isolated. The positive input and output are electrically the same. The "switched" only applies to the ground. The input and output of the RobotDyn units appear the be isolated from each other on both the positive and ground side, AND the trigger inputs (or PWM inputs) are truly optically isolated from the switched voltage.