This item is an Alone Zone manufactured by Arzel Zoning.
The AloneZone works independently to limit temperature and airflow in areas that tend to over condition but do not require full control of the heating and cooling equipment. The zoning panel is installed with Arzel dampers and any standard 24-volt thermostat. AloneZone will close the zone's ductwork when the thermostat is satisfied, keeping it from receiving more heating or cooling than needed.