Flipping Output Logic
If you have access to a soldering iron with a very fine tip, and some very fine solder and wire (say, 30 ga):

1 - desolder pins 2 and 3 of the comparator

2 - bend the pins up as far as you can without breaking them (the tip of an xacto knife will work)

3 - using the fine wire, swap the pins' connections to the pc board pads

4 - use a drop of 5-minute epoxy to insulate the pins and jumper wires.

This will reverse the logic of your output.

Be careful not to leave any solder bridges.