Edwards Signaling SD-T36 Duct Detector Accessory, 36" Sampling Tube

Ensure fast, dependable smoke detection inside HVAC ducts with the Edwards Signaling SD-T36 36-inch sampling tube. This duct detector accessory is engineered to deliver consistent air sampling across a wide section of ductwork, enabling early warning and better protection for commercial and industrial facilities. The 36" length integrates easily into standard duct systems and is compatible with Edwards Signaling four-wire duct smoke detectors (SD-4WJ) and photoelectric detector modules that operate with 20 VDC power. When paired with a photoelectric detector, the assembly supports high air velocities—helping monitoring systems perform reliably in demanding HVAC environments up to 4000 ft/min. Finished in white and built in the USA, the SD-T36 balances durability with unobtrusive installation in security, fire detection and building automation projects. Ideal for facility managers, fire/security integrators and HVAC technicians who need dependable duct smoke monitoring, the SD-T36 simplifies installation while improving detection coverage. Add the SD-T36 to your duct smoke detection strategy to enhance safety and system responsiveness today.

• Enables early, reliable smoke detection in HVAC ductwork to protect building occupants and critical equipment
• 36-inch sampling tube provides consistent air sampling across duct runs for accurate monitoring
• Designed for quick, low-profile installation and compatibility with Edwards Signaling duct detectors (SD-4WJ)
• Supports high air velocity applications when paired with photoelectric detectors (systems up to 4000 ft/min)
• Durable, US-made construction in a neutral white finish for seamless HVAC integration