Smoke Detectors, Duct

National, state and local fire codes are increasingly calling for duct smoke detectors for commercial buildings, Now you have a budget-priced, multi-purpose smoke detector to fill this need.

These units give you dependable performance for rapid shutdown of fans, blowers, and HVAC systems. Prevent the rapid spread of toxic smoke and fire gases, and the resulting loss of life.


These duct smoke detectors feature a convenient design which can accommodate either a photoelectronic or ionization sensor head. Their twist-in, twist-out detector heads allow easy removal for quick cleaning, maintenance, or a change in application without removing the duct housing or sampling tube.

(Click diagram below to enlarge)

L-362-N Ionization Duct Detector
L-364-P Photoelectronic Duct Detector
APC-55000-225 Replacement Ionization Head
APC-55000-328 Replacement Photoelectronic Head
L-367-N Duct Sampling Tube (6'' to 2.5' duct)
L-368-N Duct Sampling Tube (2.5' to 5' duct)
L-369-N Duct Sampling Tube (5' to 10' duct)
APC-MSRAP Alarm with Status LED’s
APC-MSRHK-APR Remote Test Station with Alarm Horn
APC-MSRH Remote Alarm Horn


Alarm Contacts: SPST, 2.0A
Auxiliary Contacts: 2 SPDT, 10A
Trouble Contacts: SPST, 0.3A
Power: 24Vac/dc, 120Vac, 240Vac
Cover: Clear polycarbonate for easy inspection
Velocity: 300 to 4000 f.p.m.

Smoke in a Can Tester

Test your room and duct smoke detectors … the clean, easy way!

More accurate than pushing a test button. Simulates an actual smoke condition.

  • UL Listed for all brands and models of photoelectronic or ionization detectors
  • No smoke bombs
  • No contaminating residue
  • No CFC’s – ozone safe!
TG-2000 TG Series Test Gas includes test port nozzle

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