Kidde SD-T120 SuperDuct 120" Air Sample Tube for Duct Smoke Detectors

Keep building occupants and assets protected with the Kidde Commercial SD-T120 SuperDuct 120" air sample tube — engineered to deliver reliable duct smoke detection where space is limited. This duct smoke detector sample tube pairs a PCB-mounted photoelectric sensor with patented differential sensing and environmental compensation to maintain accurate performance in challenging HVAC conditions and reduce nuisance alarms. At 120 inches in length and less than 2" deep, the SuperDuct tube provides extended sampling reach and a low-profile footprint that simplifies installation inside tight plenums and along duct runs. Designed for commercial security, fire monitoring and HVAC surveillance systems, the SD-T120 operates on standard 20V DC input and integrates cleanly with existing detector bases and control panels. Ideal for schools, office buildings, data centers and retail environments, the SD-T120 helps facilities teams maintain continuous air sampling and fast smoke detection without compromising duct layout. Upgrade your duct smoke detection strategy with a dependable, easy-to-install sample tube — perfect for centralized monitoring and streamlined safety system maintenance.

• Installs quickly in tight HVAC spaces thanks to a low-profile design under 2" for minimal disruption to ductwork
• Provides dependable duct smoke monitoring with a PCB-mounted photoelectric sensor and patented differential sensing to reduce false alarms
• 120" length delivers extended sampling reach for long duct runs and centralized detection placement
• Designed for commercial security and fire detection systems, enabling seamless integration with duct smoke detectors and building monitoring networks
• Rugged, US-manufactured construction for reliable performance in demanding mechanical and surveillance environments