SD-T42 42” Air Sampling Tube for Duct Smoke Detection

Ensure reliable fire safety in commercial and industrial spaces with the Edwards Signaling SD-T42 SuperDuct Air Sampling Tube. This high-performance duct smoke detector component integrates a PCB-mounted photoelectric sensor with advanced onboard intelligence, delivering precise smoke detection even in demanding environments. Built for compatibility with Kidde Intelligent smoke detectors and SD-4WJ four-wire duct systems, the SD-T42 excels in high-velocity air ducts—handling airflow up to 4,000 ft/min while maintaining stable sensitivity regardless of fluctuating conditions.

Its compact, shallow design (under 2″ deep) simplifies installation in tight spaces, making it ideal for standard ductwork without compromising performance. With a 42″ length, this tube provides broad coverage for comprehensive duct smoke detection, helping protect large ventilation systems from fire hazards. Whether retrofitting existing setups or upgrading to a high-velocity system, the SD-T42 delivers dependable fire safety with minimal installation hassle.