Fact 
                   The 
				  Standard is referenced in the National Building Code and 
				  National Fire Code
The 
				  Standard is referenced in the National Building Code and 
				  National Fire Code 
				  
				  The National Building Code and the National Fire Code requires 
				  that a fire signal receiving center and a fire protective 
				  signaling system at a protected property meet the requirements 
				  of CAN/ULC-S561, Installation and Services for
				  Fire Signal Receiving Centres and Systems.
				  
				  In addition, the Standard for the installation of fire alarm 
				  systems –CAN/ULC-S524-06, Installation of Fire Alarm Systems – 
				  requires that the interconnection
				  between a fire alarm system control unit and a fire signal 
				  receiving center comply with the same CAN/ULCS561. These two 
				  Standards are not only separately referenced in the Code, but 
				  are integral to each other in that conformance to CAN/ULC-S561 
				  is directly linked to CAN/ULC-S524.