4098-XAD-210 Dual Inlet Duct Sensor Housing – HVAC Duct Mount Smoke Detector Enclosure for Wide Air Ducts in Commercial Buildings
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4098-XAD-210 Dual Inlet Duct Sensor Housing – HVAC Duct Mount Smoke Detector Enclosure for Wide Air Ducts in Commercial Buildings

$3,950.00

Specifications

The 4098-XAD-210 is a Simplex UL/ULC-listed specialty duct sensor housing with two inlets and two smoke sensors, engineered for oversized HVAC ducts wider than 90 inches where uniform sampling coverage is mandatory.

  • Model: 4098-XAD-210 Dual Inlet Duct Sensor Housing
  • Brand: Simplex
  • Inlet Configuration: Dual inlet
  • Sensor Count: Two smoke sensors (one per inlet)
  • Duct Width Target: Wider than 90 inches
  • Includes: Duct probe kit
  • Certifications: UL 268, UL 268A; ULC S529
  • Power Requirement: Separate 24 VDC input
  • Output Type: Supervised output for multiple remote relays
  • Relay Control: Programmed at fire alarm control panel
  • Test Feature: Bypass mode for unobtrusive system testing
  • Typical Applications: Hospitals, airports, stadiums, industrial HVAC

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4098-XAD-210 Dual Inlet Duct Sensor Housing – HVAC Duct Mount Smoke Detector Enclosure for Wide Air Ducts in Commercial Buildings
4098-XAD-210 Dual Inlet Duct Sensor Housing – HVAC Duct Mount Smoke Detector Enclosure for Wide Air Ducts in Commercial Buildings
$3,950.00

4098-XAD-210 Dual Inlet Duct Sensor Housing

The 4098-XAD-210 Dual Inlet Duct Sensor Housing is Simplex’s specialty duct housing engineered specifically for oversized HVAC ducts wider than 90 inches, where a single sampling inlet cannot reliably represent airflow across the entire cross-section. By providing two inlets with one smoke sensor per inlet, the XAD-210 delivers even, wide-coverage sampling across large air-handler and plenum installations the kind of ducts typical of hospitals, airports, stadiums, and industrial facilities. The housing carries UL 268 and 268A listings plus ULC S529 certification, includes a duct probe kit, runs on a separate 24 VDC supply, and provides supervised output for multiple remote relays with flexible panel-side programming.

Features

  • Dual inlet housing engineered for ducts wider than 90 inches
  • Two smoke sensors (one per inlet) for full-width coverage
  • Duct probe kit included for both inlets
  • UL Listed to Standards 268 and 268A
  • ULC Listed to Standard S529
  • Supervised output for multiple remote relays
  • Panel-side relay programming with bypass for testing

Benefits

In very wide ducts, a single inlet just isn’t enough to guarantee representative sampling stratified airflow and non-uniform smoke distribution can leave a single sensor seeing far less of the duct than the code requires. The XAD-210’s dual-inlet design solves that by placing two sampling points across the duct cross-section, each feeding its own sensor, dramatically improving coverage uniformity and detection reliability on oversized ducts. For facility engineers working on hospitals, airports, stadiums, and manufacturing plants where 90″+ duct widths are routine the XAD-210 is often the only code-aligned answer. Combined with supervised multi-relay output and test bypass mode, it integrates cleanly into large-site HVAC shutdown and damper logic.

Why Choose QuickShipFire?

  • Specialty stock of the XAD-210 for oversized-duct projects not serviced by stock duct housings
  • Width-specification support we help confirm whether your duct is actually XAD-210 territory
  • Complete kit delivery including both probe assemblies to avoid install-day scrambles
  • Coordination with Simplex-centric engineers on hospital and airport HVAC builds
  • Straightforward guidance on whether the XAD-210 or two XAD-110s is the correct design choice
When is the XAD-210 mandatory instead of the XAD-110?
When a duct's width exceeds 90 inches, a single-inlet housing cannot reliably sample the full cross-section the dual-inlet XAD-210 is the code-aligned choice for oversized ducts.
Do both sensors in the XAD-210 need to agree before an alarm is reported?
Alarm logic is configured at the panel side typically either sensor going into alarm triggers the detection event, though cross-zone logic can be programmed for more complex scenarios.
Could I simply install two XAD-110 housings instead of one XAD-210?
In rare design cases, yes but the XAD-210 is purpose-engineered as one assembly, simplifying wiring, labeling, and supervision compared to two separately installed housings.
Is the duct probe kit sized for very wide ducts?
The included kit is sized to match dual-inlet installations typical of oversized ducts; installers should still confirm exact probe length requirements against the specific duct measurement.
What kinds of facilities typically spec the XAD-210?
Hospitals, airports, convention centers, stadiums, large retail malls, and heavy industrial facilities all commonly have duct widths that push past the XAD-110's single-inlet envelope.
Does the XAD-210 generate two separate addressable points at the panel?
Integration depends on how the sensors are wired and programmed; typically the housing is treated as a coordinated detection assembly, with the panel handling alarm reporting accordingly.
What installation considerations are unique to oversized ducts like these?
Airflow can be stratified and turbulent in wide ducts, so probe placement, orientation, and sealing at the duct penetrations become especially important careful install per Simplex documentation is essential.
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