0 service providers.UAC acts like a broker, said Dockins....Since signing up with United Asset, Dockins has worked with non- Siemens providers about 75 percent of the time, he estimates....At that point, they have all kinds of information for us, telling us what kind of alarm it is, and what our options are, Dockins said....We are saving more than 20 percent, Dockins said.And everything's wor