ACI 102961 Sampling Tube for Duct Smoke Detector Foot - SM-501 2.5

The ACI 102961 is a 2.5-foot sampling tube designed specifically for use with the SM-501 series duct smoke detectors. This essential component enables air sampling from HVAC ductwork, allowing the smoke detection system to monitor for smoke and products of combustion in commercial, industrial, and residential applications.

Key Features:

• 2.5-foot length ideal for ducts up to 30 inches in width
• Compatible with both SM-501-N (ionization) and SM-501-P (photoelectric) detector models
• Can be cut to exact duct size for precise fit
• Protrudes into ductwork for effective air sampling
• Sold separately from the main detector unit (sampling tubes must be ordered based on duct dimensions)

The sampling tube works in conjunction with the SM-501's exhaust tube to draw air samples through the detection chamber. When ordering, ensure the tube length matches your duct width—ACI offers multiple lengths including 1', 2.5', 5', and 10' options to accommodate various HVAC system configurations.