Notifier by Honeywell introduces the IntelliQuad Plus detector for carbon monoxide and smoke. As part of an Onyx Series fire alarm system, the unit combines four sensing elements for smoke, carbon monoxide, light or flame, and heat to quickly and unequivocally verify a true fire or CO emergency, according to the company. Separate signals for CO and smoke allow for Onyx systems to respond appropriately based on the event type.

