Air Products & Controls SL-2000-P


Duct Smoke Detector, 4-Wire, Photoelectric Type

Availability: Estimated 2 Weeks

  • Factory New
Brand: Air Products & Controls Part #: N03C-8154 Categories: , Manufacturer Part #: SL-2000-P


The SL-2000 Series smoke detector is fitted with a mounting base that will accept an ionization smoke detector head model 55000-225APO or photoelectric smoke detector head model 55000-328APO. The duct unit supports two sets of form “C” alarm contacts, one form “A” alarm contact and one form “C” trouble contact. The trouble contact supervises the presence of the input power, removal of the detector cover and the removal of the smoke detector head.


Weight 2.5 lbs
Dimensions 13.50 × 4.50 × 2.25 in

Apollo Fire Detectors


Air Products & Controls




Duct Detector

Detectable Medium


Detection Method



Production Status



  • Low-Flow Technology: Both Ionization and Photoelectric models listed for velocities between 100-400 ft./min
  • Both models listed for high-temperature applications
  • Operating voltages: 230VAC, 115VAC, 24VAC, 24VDC
  • Interconnect up to 30 units for common functions
  • Patented “No-Tools Required” front or rear loading and removing sampling tubes/exhaust tubes
  • Patented “Test Port Valve” allows for aerosol smoke testing without cover removal
  • Clear cover fitted with four captive “No-Tools Required” thumbscrews
  • Instantaneous cover removal trouble indication
  • Staggered terminal blocks for easier wiring
  • Flashing LED on detector head indicates normal operation
  • Magnet test capability (magnet included)
  • More wiring space than competitive models
  • Footprint allows easy retrofit in many applications without additional drilling
  • Over 15 remote accessories available
  • Duct wall gaskets on back of enclosure are pre-installed
  • Compatible with the WP-2000 weatherproof enclosure
  • Reset switch is also an alarm test switch – competitive models require a magnet or cover removal to test at unit
  • Unit includes a green pilot and red alarm visual indicators
  • External mounting tabs do not require cover removal to install
  • Colored cover gasket indicates proper cover seal
  • UL, CUL, CSFM, and MEA Listed
  • Compact, lightweight size means easy handling, lower shipping costs
  • Two sets of 10A form “C” alarm contacts
  • One set of 2A form “A” alarm contacts
  • One set of 10A form “C” trouble contacts
  • Large terminal connection screws
  • Standard interchangeable “plug-in” UL268 photoelectric or ionization heads
  • Advanced detector head design yields internal dust filtering
  • No additional screens or filters to clean
  • Compatible with building automation and fire alarm systems
  • Ionization and Photoelectric versions available
  • Complete wiring details permanently attached to unit

SL-2000 Series: Duct Smoke Detectors

Air Products and Controls - Data Sheet

SL-2000 Series Duct Smoke Detectors

Air Products and Controls - Instructions Installation

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