Gravity: MOSFET Power Controller Module as MOSFET Relay or Driver Compatible with Arduino Raspberry Pi and other Microcontroller

Properly designed p-channel mosfet module. It switches the positive connection; necessary for common negative circuits. It has opto isolation and a reasonable modern fet (HM70P04K). Most importantly indicator LED and opto are driven separately thus preserving the low switch on voltage. Additionally the FET has a diode (in parallel with the typical resistor) between GS used to improve transient response for fast switching applications. Dfrobot also provides drawings and schematics- always a plus.I am taking away a star because of ridiculousness. Both the example circuit (with arduino MCU) and included wiring would seem to indicate the necessity of VCC on the controller side. However, both schematics and probing of the board indicate that this is useless; as VCC pin is not connected. As such a 2pin JST-PH would work as well as the pointlessly larger 3pin connector.