The 5VDC supply on our type WPM controls was not designed to do much more than provide power to the main speed potentiometer. You may use it to power something else, but will not be able to get much current out of it. We only use .5mA from this supply, which is the optimal maximum current. You may be able to pull 1mA, but at your own risk. If you pull 2mA, you will definitely damage the board. Please proceed with caution if you do plan on using this power supply to source power to any of your components. Note that using this supply as a source of power is out of the rated specifications of this control and will void your Bodine warranty.