Edwards Signaling SD-T24 SD Series SuperDuct 24" Air Sample Tube for Duct Smoke Detectors

Designed for dependable HVAC duct monitoring in constrained spaces, the Edwards Signaling SD-T24 SuperDuct 24" air sample tube delivers accurate duct smoke detection without bulky hardware. This sampling tube is less than 2" deep, making it ideal for retrofit and new-construction applications where clearances are limited. The PCB-mounted photoelectric sensor uses onboard intelligence and patented environmental compensation to maintain stable, drift-free sensitivity—helping minimize false alarms and reduce maintenance overhead.

Built for performance, the SD-T24 handles air velocities up to 4000 ft/min and offers a wide detection sensitivity range (0.79%–2.46% per foot), ensuring reliable detection across commercial and industrial duct systems. It pairs with standard Kidde Intelligent detectors and the Four-wire SD-4WJ detector, simplifying installation with a prewired detector base for fast plug-in setup. Whether you’re upgrading a fire detection network, enhancing building security monitoring, or integrating into a smart facility surveillance system, the SuperDuct sampling tube provides precision, compatibility, and ease of service. Add the Edwards Signaling SD-T24 to your duct smoke detection solution today to improve safety and system uptime.

• Optimized for tight spaces: under 2" depth for quick, low-profile installation into HVAC ducts
• Reliable smoke monitoring: PCB-mounted photoelectric sensor with patented environmental compensation for drift-free performance
• High-velocity ready: supports duct air speeds up to 4000 ft/min for demanding commercial systems
• Broad compatibility: works with standard Kidde Intelligent detectors and SD-4WJ four-wire duct smoke detectors for seamless integration
• Reduces nuisance alarms: wide, stable sensitivity range (0.79%–2.46% per foot) tuned for accurate detection in duct environments