Napco FWC-DTUBE-S10 Sampling Tube Duct Detector 5-10

Ensure reliable early smoke and air-contaminant detection in ducted HVAC systems with the Napco Security Technologies FWC-DTUBE-S10 sampling tube. As a purpose-built detector accessory in the Detector Accessories & Bases category, this steel intake tube is drilled along its length to draw representative air across the sensor, improving detection accuracy and reducing nuisance alarms when holes are oriented into the airflow. The standard 5–10" sampling length fits common duct widths and can be cut to custom sizes on-site for quick retrofit or new-construction deployments. An approx. 7.5" exhaust tube preserves a stable exhaust path to deliver consistent sensor response for fire detection, HVAC monitoring, and indoor air-quality surveillance. Designed for simple installation and full compatibility with Napco duct detectors and most alarm panels, the FWC-DTUBE-S10 helps integrators and facilities managers maintain robust security and monitoring performance. Ideal for commercial, institutional, and industrial applications where dependable duct sampling is critical. Request pricing or specify your custom length to get this Napco duct sampling solution installed in your monitoring system today.

• Provides reliable early smoke and air contaminant detection in ducted HVAC systems for improved fire protection and monitoring
• Intake steel tube with drilled holes captures representative airflow while minimizing false alarms when holes face the air stream
• Standard 5–10" sampling length fits common duct widths and can be trimmed on-site for fast retrofit or new installations
• Short exhaust tube (approx. 7.5") maintains a clean airflow path for consistent sensor response and system accuracy
• Compatible with Napco duct detectors and third‑party alarm systems; US-made quality for commercial security and surveillance projects