I am looking to get a switch and needed help answering a question about it.

The switch allows for two "products" to be wired up and turned on with only one switch. My question is that when i turn on the switch on are the two "products" going to cross or stay separated through the switch?

Here is what the switch looks like:



and here is a link to the pdf showing a diagram. what I am questioning are the blue dashed lines below the "wiring diagram"

http://china-ningbo.com/manager/yang...s/pic/177f.pdf

What do you think?