The TDD (true duct smoke detector) is able to detect smoke early on in a ventilation duct without giving false alarms. It checks for optical obscuration. The sensing part of the detector covers as ...

Duct smoke detector maintenance requirements are not included in the NFPA standard that covers HVAC systems (NFPA 90A or 90B); however, the International Code Council’s 2015 Mechanical Code does state ...

The company’s duct-mounted smoke detector with Low-Flow technology is UL listed for smoke detection in air speeds as low as 100 ft/min, including locations where slow-moving air is present, such as in ...

Specifically designed for HVAC smoke detection, the Optica Duct Smoke Detector brings enhanced confidence to site managers and end-users who have struggled to find smoke detection solutions that ...