Series SL-2000 Duct Smoke Detector

Early Smoke Detection in HVAC Systems

The Series SL-2000 Duct Smoke Detector is crucial for early detection of smoke and products of combustion present within HVAC ductwork. This series can be utilized in many different types of applications including commercial, industrial, and residential. The unit is designed to not only alarm when smoke is detected, but will also utilize relays to disable fans and blowers. The series comes complete with technician friendly “No-Tools Required” features to make installation and servicing simple and efficient.

Product Applications

  • Early smoke detection in ductwork
  • Commercial/Industrial/Residential HVAC
  • BAS automation

Models & Ordering

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Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Model Description Usually Ships* Price Order
Ships: Same Day
Price: $264.00
Conventional, 4-wire, universal voltage, photoelectric duct smoke detector Same Day* $264.00 Order


Sensor Type:
Photoelectric or Ionization.
Air Velocity Range:
100 to 4000 FPM.
Ambient Temperature:
SL-2000-N: 32°F to 158°F (0°C to 70°C); SL-2000-P: 32°F to 140°F (0°C to 60°C).
Humidity Limits:
85 ±5 % RH (@32 ±2°C; 86 ±3.6°F) Non-condensing/Nonfreezing.
Power Requirements:
Standby: 230 VAC (12 mA), 115 VAC (22 mA), 24 VAC (55 mA), or 24 VDC (14 mA); Alarm: 230 VAC (18 mA), 115 VAC (32mA), 24 VAC (190 mA), or 24 VDC (68 mA).Standby: 230 VAC (12 mA), 115 VAC (22 mA), 24 VAC (55 mA), or 24 VDC (14 mA); Alarm: 230 VAC (18 mA), 115 VAC (32mA), 24 VAC (190 mA), or 24 VDC (68 mA).
Electrical Rating:
Alarm contacts: 2 sets form “C” rated at 10 A resistive @ 115 VAC and 1 set form “A” rated at 2 A; Trouble contacts: 1 set form “C” rated at 10 A @ 115 VAC.
Electrical Connections:
Screw terminals.
Grey plastic back box, clear plastic cover (Makrolon 94V-0).
Enclosure Rating:
SL-2000: NEMA 1; WP-2000: NEMA 3R.
Radioactive Element:
For SL-2000-N (Ionization) americium 241; 0.9 Micro-curie; Do not expose to corrosive atmospheres.
2.5 lbs.
cULus (UL 268A) File # S2829, CSFM Listed (3240-1004:105), MEA Accepted (73-92-E; VOL. 27).


  • Wide application environment with ability to operate in air speeds of 100 FPM (0.5 m/s) to 4000 FPM (20 m/s)
  • Simple installation with the patented “No-Tools Required” front or rear installation of sampling/exhaust tubes
  • Easy visual status determination with transparent cover to view detector head LED
  • Reduced installation costs with integrated relays for connecting to alarm devices
  • Quick verification testing with integrated smoke test port


Model Number Description Usually Ships* Price Order
FAST TUBE Sectional, polycarbonate sampling tube, bag of (3) 24" tubes 2-3 Weeks $35.50 Order
TG-2500 Test gas for SL-2000 models 2-3 Weeks $35.50 Order
55000-328APO Photoelectric replacement sensor for SL-2000-P 2-3 Weeks $123.00 Order
WP-2000 Weatherproof enclosure for SL-2000 models 2-3 Weeks $212.00 Order

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