Let's talk about Analog & Digital Inputs. What are they, and what can you do with them? First things first - the name of the card. Analog Digital INput This topic comes up from time to time, looking to implement an extra Float switch, a relay, a manual switch or button to trigger actions etc. This is where the PLM-ADIN ad-on card comes in handy. Looks daunting? It's not. It's actually simple as Pie - let me show you. When you order the Add-In card, the following will arrive. You ask how do you connect that to your fancy gadgets? Well you probably have a bare wire. There are a few options, the one I personally prefer... Amazon - DB9 Terminal Adapter - $6.99 Now you have a terminal block to connect your sensor/switch wires. Simple. Last night I automated my cabinet lights. I grabbed a set of Magnetic contact switches: Alarm contact switches - $15 for a set of 10 For the left 2 doors, I used one each, and wired them in series. For the right Door, I used a single. Here is a wiring diagram. (not mine) I ran both circuits of magnetic contacts to the common GND terminal, pin/post #8 Circuit 1, I ran to DIGITAL INPUT #1 - Pin/Post #2 Circuit 2, I ran to DIGITAL INPUT #2 - Pin/Post #3 Let's program GCC: 1. Verify Digital Inputs are responding, and name them: 2. Assign DI's to outlets - in this case, make sure to select INVERTED.