NOTIFIER introduces the IntelliQuad Plus smoke/carbon monoxide detector, offering CO detection together with superior smoke detection and nuisance alarm rejection as part of an ONYX Series fire alarm system. One unit combines four sensing elements for smoke, CO, light/flame and heat to quickly and unequivocally verify a true fire or CO emergency. Combined with the addressable B200S sounder base, IntelliQuad Plus serves as an all-in-one detection and notification unit, significantly reducing materials, installation and maintenance costs.