Fresh air ventilation control panel, 9″ round 2-position damper, 120/24 20VA transformer. The iO-FAV fresh air ventilation system is designed to introduce fresh air into a building through an intake damper controlled by a micro-processor logic panel. The iO-FAV has single adjustment setup, exhaust fan control option, outdoor temperature and/or humidity limit option and damper override capabilities. It is easy-to-install and meets ASHRAE 62.2 standard. The standard iO-FAV comes with a panel, 20VA transformer, and round damper. The control panel is available separately (iO-FAVPAN) and can be ordered with additional size dampers both round and/or rectangular.