Q. Is this a self contained unit that can be controlled by any microcontroller that outputs a logic level (i.e. +5volts).
A. Hi Kevin. Thank you for your question. The relay is switched on using the normal 5V signal that is supplied by the Arduino. The board is laid out for easy connection with the Arduino. The board could be used for other microcontrollers but is not intended to be. You would just have to work out where to connect power and signal.