I am still looking into purchasing the Masso Controller. One thing I am not clear on is how it will handle NPN or PNP sensors. I have NPN sensors right now, which do not work on my current controller as they are. I had to wire in 12v mechanical relays. Can I wire NPN sensors directly to the Masso Controller? The documentation says I can invert the input. Does this mean I can use NPN or PNP by simply inverting the input on the setup screen?