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This switch is calibrated for a 15 PSI cutout (falling) and a 40 PSI cut-in (rising) pressure differential
Optimized Performance: Efficient 35
offering versatile mounting options within ductwork or ceilings
reducing vibration and preventing premature bearing failure common with universal alternatives
Heavy-Duty Construction: Built to resist the corrosive effects of moisture and temperature cycling inherent in commercial HVACR environments
Lennox 21Z11 Smoke Detector kit 326070-701 This switch is calibrated forThe Lennox 21Z11 is a professional grade duct smoke detector kit engineered for seamless integration with commercial and light commercial air handling units. This HVAC smoke detection kit is critical for life safety compliance, providing rapid identification of combustion particulates within the supply or return air streams. Designed specifically for Lennox equipment, the 21Z11 interfaces directly with HVAC safety circuits and system control boards to
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