Class A Converter Module can be used to convert the Style B (Class B) Initiating Device Circuits to Style D (Class A) and Style Y (Class B) Output Circuits to Style Z (Class A).General InformationName: CLASS A CARD F/MS5 MS10UD PNLCategory: Fire-lite Alarms By Honeywell, Fire, Fire Control Panels, Fire Control AccessoriesUPC Code: 783008109110Country of origin: United States. Country of origin is subject to change.