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Duct Smoke Detector 4-Wire Photoelectric Smoke Detection

By: Buildory
SKU: D4210|ID: 105941
$175.00
+ Shipping

Key Features

  • Early Smoke Detection Detects smoke at its earliest stages, preventing hazardous conditions from escalating.
  • Reliable Operation Operates effectively across a wide range of temperatures and humidity levels.
  • Integrated Alarm System Initiates alarm signals to support immediate fan shutdown and system control.
  • Versatile Power Options Compatible with 24 VDC, 24 VAC, or 120 VAC power sources for flexible installation.
  • Coordinated Safety Supports interconnection of up to 50 detectors for coordinated response in large systems.
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Product Details

Duct Smoke Detector 4-Wire Photoelectric Smoke Detection

Smoke introduced into an air duct system can quickly spread throughout an entire building, making early detection critical. The D4120 and D4S Duct Smoke Detectors are specifically designed for HVAC air duct applications, providing reliable smoke detection before hazardous conditions escalate. Using advanced 4-wire photoelectric sensing technology, these detectors continuously sample airflow within the duct to identify the presence of smoke at its earliest stages.

Key Features

  • Duct smoke detector designed for HVAC air duct smoke detection
  • 4-wire photoelectric smoke sensing technology for early detection
  • Efficient housing design samples air passing through the duct
  • Initiates alarm signals to support fan shutdown and system control
  • Designed to operate on 24 VDC, 24 VAC, or 120 VAC power sources
  • Alarm and supervisory relay contacts for control panel integration
  • Auxiliary relay provided for fan and blower shutdown
  • Detector interconnection supports signaling of up to 50 detectors for coordinated fan shutdown
  • Not designed for 2-wire applications

Learning Resources

Operation PDF Guide

Specifications

SKUD4210
Humidity0% to 95% RH, Non-condensing
Operating Temperature–4° to 158°F (–20° to 70°C)
Storage Temperature–22° to 158°F (–30° to 70°C)
Air Velocity100 to 4000 ft/min (0.5 to 20.3 m/sec)
Weight2.5 lbs (1.14 kg)
Footprint Dimensions (Rectangular)14.38 × 5 × 2.5 in
Footprint Dimensions (Square)7.75 × 9 × 2.5 in
Power Supply Voltage20–29 VDC / 24 VAC / 120 VAC
Reset Voltage3.0 VDC / 2.0 VAC / 10 VAC min
Power Up Time35 sec max
Alarm Response Time15 sec
Max Standby Current21 mA @ 24 VDC / 65 mA @ 24 VAC / 20 mA @ 120 VAC
Max Alarm Current65 mA @ 24 VDC / 135 mA @ 24 VAC / 35 mA @ 120 VAC

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