...
This picture shows a summary of what is going on in the snubber circuit: 
Note that in the picture above, everything except the relay is located on the wiring hub.
The DAM-2 outputs have a snubber from the common, COM, to the normally closed, NC, and normally opened, NO contact. In the situation where AC is being switched, the snubber can permit up to 5 milliamps AC to flow to the load. If only a neon light, LED, or other load that draws current is attached, the device may be energized.
...
The visual indicator affected by the leakage current should have the series capacitor and resistor added as shown here: 