4098-XAD-110 Single Inlet Duct Sensor Housing
The 4098-XAD-110 Single Inlet Duct Sensor Housing is a Simplex specialty duct detection housing designed around a single inlet and one smoke sensor a right-sized solution for standard HVAC ducts where one sampling point delivers representative airflow coverage. It ships with an included duct probe kit, is UL Listed to Standards 268 and 268A, and carries ULC listing to Standard S529, which makes it appropriate for projects specifying NFPA 72 and Canadian-code compliant duct detection. Operating power is separately supplied at 24 VDC, and its supervised output supports multiple remote relays, whose behavior is programmed at the fire alarm control panel including manual activation, cross-alarm triggering, or bypass for unobtrusive system testing.
Features
- Single inlet housing with one integrated smoke sensor
- Duct probe kit included for out-of-the-box installation
- UL Listed to Standards 268 and 268A
- ULC Listed to Standard S529 for Canadian-code compliance
- Supervised output for controlling multiple remote relays
- Panel-programmable relay behavior (manual, event-driven, or bypass)
- Separate 24 VDC power input for reliable relay operation
Benefits
The 4098-XAD-110 addresses a practical design question on many commercial HVAC jobs: when the duct width fits within the single-sensor coverage envelope, this housing delivers UL-compliant detection with the fewest components and the cleanest wiring. The supervised multi-relay output is particularly valuable for projects where HVAC shutdown, damper closure, and auxiliary equipment control all need to respond to one duct alarm and integrators prefer to program that cascade logic centrally at the FACP rather than hard-coding it at the duct. Test bypass mode is a quiet but meaningful benefit: the integrator can validate commissioning without actually triggering building-wide relays, cutting the disruption of acceptance testing dramatically.
Why Choose QuickShipFire?
- Availability of specialty duct housings Simplex integrators often struggle to source
- Clear duct-probe-kit inclusion so installers aren’t hunting for separate parts
- Guidance on whether XAD-110 single-inlet fits your duct width or if XAD-210 is required
- Coordinated 24 VDC supply recommendations for compliant commissioning
- Fast-turnaround handling on specialty-duct orders tied to AHJ deadlines

