Free PDF manuals for Micra-Stratos aspirating smoke detection systems — the high-sensitivity smoke detection range from Stratos, originally developed in the UK and now part of the broader fire detection portfolio of Carrier Global. Stratos systems are widely deployed across UK and European data centres, telecoms infrastructure and industrial sites where the more cost-effective alternative to VESDA is preferred.
Micra-Stratos Aspirating Smoke Detection Manuals
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About Stratos
Stratos was developed in the UK as a competitive alternative to VESDA in the aspirating smoke detection market. The Stratos range provides equivalent EN 54-20 certified ASD performance with a different commercial positioning, often more cost-effective for medium-sensitivity applications. The brand sits within the broader fire detection portfolio of Carrier Global following industry consolidation.
Key Stratos product families
- Stratos HSSD-2 — High Sensitivity Smoke Detector, the long-standing flagship product for high-value asset protection
- Stratos Quadra — four-pipe aspirating detector for protecting four separate zones from a single detector unit
- Stratos Micra 25 — compact aspirating detector for smaller protected areas, the entry-level Stratos product
- Stratos Micra 100 — medium-area aspirating detector
- Stratos Micra 250 — larger-area aspirating detector for warehouse and bigger protected volumes
How Stratos aspirating smoke detection works
Stratos systems use the same fundamental principles as VESDA and Wagner TITANUS: air is drawn through a network of sampling pipes routed through the protected area, with sampling holes pulling air from each protected zone. The detector analyses the air for smoke particles. Stratos uses a different optical detection method to VESDA, optimised for the medium-sensitivity range (Class C and Class B per EN 54-20) where the very-high-sensitivity Class A capability of VESDA may be over-specified.
Where Stratos is deployed
Stratos systems are widely deployed in installations that need EN 54-20 certified aspirating detection but where the highest-sensitivity Class A protection of VESDA is not required:
- Medium-density telecoms equipment rooms
- General-purpose data centres and computer rooms
- Warehouse and storage facilities
- Light industrial buildings
- Multi-storey commercial atria
- Concealed-space protection (above ceilings, in voids)
- Underground transport infrastructure
Stratos pipe network design
Stratos systems require pipe network design using the manufacturer’s software, similar to VESDA’s ASPIRE and Wagner’s equivalent tools. The design output is the engineering basis for EN 54-20 acceptance testing.
Stratos vs VESDA vs Wagner
The three leading aspirating brands serve different segments. VESDA is dominant in highest-sensitivity Class A applications (data centres, cleanrooms, museums). Wagner is dominant in Germanic Europe and in OxyReduct fire prevention. Stratos competes effectively in medium-sensitivity Class B and Class C applications where cost-effectiveness matters more than the absolute lowest detection threshold. UK engineers working across mixed installations will encounter all three brands.
Stratos training
BH Courses do not currently run a Stratos-specific training programme, but the underlying aspirating smoke detection principles are shared with VESDA and Wagner. The VESDA and Wagner training programme covers the engineering principles — pipe network design, EN 54-20 acceptance testing, commissioning workflow — that translate directly to Stratos commissioning. For the broader air sampling pathway, see air sampling fire alarm training.
For wider fire alarm engineering competence including aspirating alongside addressable and conventional platforms, see the Fire Alarm Training Course.
Browse related air sampling manuals
See the related Xtralis VESDA and Wagner TITANUS sections for parallel ASD products, or the Air Sampling parent hub for the wider library.
