Assume the photo above is a parking garage in Chicago, IL. There is a dry sprinkler system that protects the lives of the people who park there.
Question #1: Is there water in the dry portion of the pipe? Why or Why Not. A Salamander Reservoir can alert you to unwanted water in your system before it becomes a pipe freeze hazard. So, this can ensure life safety for your patrons.
Question #2: What are you waiting for? Put a Salamander on your system!