I have a bunch of PR49-24C Light sensors that I would like to externally power via the 12V Jack. I plugged in a +12VDC supply (Center positive) to the sensor without the batteries installed and turned it on using the switch. To test the sensor I pushed the CFG button to see if the LED would turn on. When doing this the LED does not turn. I assume this means the jack is not supplying power. See the image below of my setup.
How would I go about externally supplying these sensors?