Controls up to 4 VELUX smoke ventilation windows GGL/GGU simultaneously, 1 VELUX smoke ventilation flat-roof window CSP (or 2 VELUX glass rooflight electric exit CXU, depending on local legislation, please consult your local VELUX Sales company). Connected windows can be easily opened and closed for fresh air by using a comfort ventilation switch. KFC 310 also features 72-hour battery back-up for added safety.
