APC SM-501-N In-Duct Smoke Detector
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APC SM-501-N In-Duct Smoke Detector

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Be Alerted to Dangerous Smoke in Your HVAC Ducts
  • Detects smoke, other products of combustion in duct systems
  • Multi voltage: 24, 115, & 230VAC, 24VDC
  • Two NO/NC relay outputs
  • One NO/NC trouble relay output
  • LED indicators

Item #: 30215

Ships in 1 to 2 days

$113.25
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  • What's Included
  • Your heating and air conditioning system does a great job of moving air throughout your home - but what if there's a system malfunction or a fire? You don't want your HVAC system spreading the smoke and combustion gasses to other areas, you want the system to shut down and notify you. This in-duct smoke detector will do just that. Using a sampling tube, it constantly tests the air inside your HVAC system, looking for smoke and combustion gasses. When everything is normal, there's a flashing green LED on the unit. When it detects these harmful elements, it lights a red LED and energizes its two relay outputs. One can be connected to a strobe light or siren, and one can be used to shut down your HVAC system.

    Requires the use of a properly-sized sampling tube:
    for ducts between 6" and 30" in width
    for ducts between 2.5' and 5' in width
    for ducts between 5' and 10' in width



  • Specifications
    Manufacturer Air Products and Controls (APC)
    Manufacturer Product No. SM-501-N
    Standby Power Requirement 230VAC, 12.0mA
    115VAC, 25.0mA
    24VAC, 35.0mA
    24VDC, 15.0mA
    Alarm Power Requirement 230VAC, 16.0mA
    115VAC, 32.0mA
    24VAC, 74.0mA
    24VDC, 56.0mA
    Relay Contact Rating Resistive Load 10A @115VAC
    Air Velocity 500 to 4000 ft/min
    Ambient Temperature 32° to 158&degF (0° to 70°C)
    Operating Humidity 10 to 85% Non-Condensing/Non-Freezing
    Wiring #12 to #22AWB Solid or Stranded
    Approvals UL, CUL (UL268A, UROX, UROX7)
    CSFM (3240-1004:108)
    MEA (73-92-E; VOL 26)
    Materials 18G Steel Backbox
    Clear Makrolon Cover
    Finish Gray Paint
    Radioactive Element Americium 241: 0.9 micro-Curie
    Do not expose to corrosive atmosphere
    Weight 3.5lb
    Dimensions 9.125" x 7.25" x 2.25"

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    * Required Fields

    • 1x - In-Duct Smoke Detector
    • 1x - 7" Exhaust Tube
    • 1x - Sampling Tube End Cap
    • 1x - Mounting Template
    • Mounting Hardware
    • 1x - Instruction Manual

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