I have a local AHJ (Maryland) insisting, that according to the Code, wall mounted visual fire alarm notification appliances must have RED housings so they contrast with the background. He cannot tell me what section of the Code contains this requirement. I have reviewed the verbiage pertaining to fire alarm notification appliances in 72-2013, 101-2015, IBC & IFC-2015 and cannot find any requirement that a wall mounted visual fire alarm notification appliance have a red housing. Anyone know of a Code section containing this requirement? Any assistance will be appreciated.