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System Sensor D4S 4-Wire Photoelectric Sensor Component

SKU: D4S System Sensor
System Sensor InnovairFlex D4S Smoke Detector Sensor Component
Product images for System Sensor D4S 4-Wire Photoelectric Sensor Component. 3 image(s) available. Click on image to view full size.

Key Features

  • Reliable duct smoke detection with industry-leading false-alarm immunity, protecting HVAC systems and building occupants without costly downtime
  • Flexible InnovairFlex design fits square or rectangular ducts and installs front or back with a patented sampling tube—reducing retrofit time and labor
  • Wide air-velocity coverage (100'/min to 4,000'/min) and multi-voltage support (120V AC, 24V AC/DC) for compatibility across commercial HVAC and security applications
  • Plug-in photoelectric sensor module simplifies maintenance and replacement, minimizing service time and keeping monitoring systems online
  • Patented interconnect for multi-fan shutdown and robust environmental tolerance (–4°F to 158°F, 0–95% RH) to ensure reliable performance in demanding installations

Quick Specifications

Product Model
D4S
Brand Name
System Sensor
Product Line
InnovairFlex
Product Name
InnovairFlex D4S Smoke Detector Sensor Component
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Product Information Tabs

Overview

Ensure reliable, low-false-alarm smoke detection in your building’s air handling system with the System Sensor D4S 4-Wire Photoelectric Sensor Component. Designed for the InnovairFlex line, this duct smoke detector sensor delivers accurate early-warning fire detection across a wide air-velocity band (100'/min to 4,000'/min) and supports common power sources including 120V AC and 24V AC/DC for seamless integration into existing fire, security, and building automation systems.

The D4S combines a plug-in photoelectric sensing module with patented sampling-tube installation and versatile square-to-rectangular mounting, reducing installation time and lowering lifetime maintenance costs. Its advanced low-flow technology and false-alarm immunity maintain reliable monitoring in contaminated or variable-flow duct environments, while the interconnect feature enables coordinated multi-fan shutdown for safer HVAC control during events. Ideal for facility managers, integrators, and security teams, the D4S helps meet code requirements and enhances overall surveillance and fire-protection strategies. Upgrade your duct monitoring—specify the System Sensor D4S for new builds, retrofits, or security-integrated HVAC projects.

Features

  • Reliable duct smoke detection with industry-leading false-alarm immunity, protecting HVAC systems and building occupants without costly downtime
  • Flexible InnovairFlex design fits square or rectangular ducts and installs front or back with a patented sampling tube—reducing retrofit time and labor
  • Wide air-velocity coverage (100'/min to 4,000'/min) and multi-voltage support (120V AC, 24V AC/DC) for compatibility across commercial HVAC and security applications
  • Plug-in photoelectric sensor module simplifies maintenance and replacement, minimizing service time and keeping monitoring systems online
  • Patented interconnect for multi-fan shutdown and robust environmental tolerance (–4°F to 158°F, 0–95% RH) to ensure reliable performance in demanding installations
General Information
Brand Name System Sensor
Manufacturer Honeywell International, Inc
Product Line InnovairFlex
Product Name InnovairFlex D4S Smoke Detector Sensor Component
Product Type Photoelectric Sensor
Product Model D4S
Product Series InnovairFlex
Manufacturer Part Number D4S
Controls/Indicators
Status Indicators Yes
Power Description
Power Source AC, DC
Input Voltage 120V AC, 24V AC, 24V DC
Miscellaneous
Compatibility System Sensor InnovairFlex D4120 4 Wire Photoelectric Duct Smoke Detector
Country of Origin MX