or thread the unit into exact alignment within the combustion chamber

For HVAC technicians and contractors

A 1-pole contactor only interrupts one "hot" leg of the circuit

Field Reliability: Durable alloy construction resists corrosion and mechanical fatigue common in outdoor gas meter installations

System Sensor ST-3 Tube or thread the unit intoThe System Sensor ST 3 is a professional grade metal duct sampling tube engineered for precise air monitoring in commercial and industrial HVAC systems. Designed for duct widths from 2 ft to 4 ft, this 3 foot rigid tube facilitates the intake of air into the detection chamber to ensure rapid smoke identification. This duct smoke detector accessory is specifically built for integration with legacy duct smoke detector models, including the DH100, DH200,