The Secutron DUCT-ST5 is a 5-foot sampling tube for the MIX-4010-DUCT photoelectric duct smoke detector. It samples air across HVAC ducts from 2 to 5 feet wide.
First, the tube inserts through the duct wall into the airflow. Then sampling holes along its length draw air into the detector housing. Therefore, the detector sees a representative cross-section of the duct, not a single point.
In addition, the MIX-4010-DUCT housing uses a venturi effect on its sample and exhaust tubes. As a result, the system works at very low duct air velocities. Furthermore, this single-pipe design supports correct sampling inflow and outflow.
Secutron DUCT-ST5 Key Specs
- Length: 5 ft (1.5 m)
- Compatible duct widths: 2 ft to 5 ft
- Pairs with: Secutron MIX-4010-DUCT duct smoke detector housing
- Function: sample tube inserted across the duct cross-section
Notes Before Ordering
The DUCT-ST5 is the 5-ft length in the MIX-4010-DUCT tube family. However, other lengths exist for wider ducts. Therefore, measure the duct width before ordering and match the tube length to the duct. In addition, the sampling tube ships separately from the detector housing — order both for a complete installation.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 4 lbs |
|---|---|
| Dimensions | 60 × 1 × 1 in |
| Condition | New |
| Manufacturers | Secutron |
| Part Type | Replacement Part |






