Sensis™:
Specialist aspirating smoke detection​

ASD (Aspirating Smoke Detection) is a highly sensitive fire detection technology that continuously samples the air through a network of pipes, providing the earliest possible warning of smoke. Designed for environments that require very early warning smoke detection, ASD offers reliable protection in challenging or high-value applications.
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Features & Benefits

Explore the key features and benefits that make Sensis a smart,
cost-effective choice for reliable early warning smoke detection where conventional solutions fall short.

Which Sensis System is Right for You?

Every environment has unique fire safety requirements, choosing the correct early warning smoke detection solution is critical. To help you decide, we have created a comprehensive comparison guide that outlines the features and benefits of each model in the Sensis range.

Model
Azure 500s
Azure 2000s
Indigo CSD-H
Cobalt HM1
Cobalt HM2
Product
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Area Coverage
1860 m2
2000 m2
100 m2
1600 m2
2000 m2
Alarm Sensitivity Range
0.005~20% obs/m
0.005~20% obs/m
0.1~12.5% obs/m
0.01-20% obs/m
0.01-20% obs/m
Max No. Pipes
1
4
1
1
2
Max Pipe Length (Linear/Branch)
100/240 m
400/960 m
30/40 m
105/260 m
105/260 m (x2)
Max Sampling Hole
(Class A/B/C)
30/60/60
40/60/100
2/4/4
8/16/30
16/32/64
Pipe Addressability
 
Address displayed on S2000/4A
16 zone relays S2000/4A16
 
 
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Smart Smoke Level Monitoring
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Relay Outputs
7
7
2
2
4
No. of Aspirators
1
4
1
1
2
3-in-1 Display
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Optional Zone Relays
 
16 in Sensis 2000/4A16
 
4 relays (configurable)
8 relays (configurable)
Event Log
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EN Approved
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FM Approved
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Pending
Pending
Pending

 

Azure 500s
Azure 2000s
Indigo CSD-H
Cobalt HM1
Cobalt HM2

Types of Aspirating Smoke Detectors

An aspirating smoke detector (ASD) is a fire detection system that uses an aspirator to continuously sample air from the protected area via a network of pipes. The air is then analysed in a highly sensitive detection chamber, allowing the system to identify minute smoke particles at incipient fire stages.

Aspirating Smoke Detectors (ASD)

An aspirating smoke detector (ASD) is a highly sensitive fire detection system that continuously draws in air samples from the protected area through a network of pipes. The air is passed through a detection chamber, where sophisticated sensors check for even the smallest traces of smoke. Unlike traditional spot detectors that wait for smoke to reach them, ASDs actively “sample” the environment, making them capable of detecting fires at a very early, often invisible stage. They are commonly used in mission-critical or challenging environments such as data centres, clean rooms, cold stores, and warehouses—where fast, reliable detection and reduced false alarms are essential.

Cabinet Smoke Detectors (CSD)

A cabinet smoke detector takes aspirating detection a step further by protecting equipment right at the source. Unlike room-level detectors that only sense smoke once it escapes into the wider environment, a cabinet unit draws air samples directly from inside electrical or server cabinets. This means it can identify overheating or smouldering components long before room sensors would react. For installers and operators, it offers targeted protection, faster warning times, and peace of mind that critical assets are safeguarded without adding complexity to the wider fire system.

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Related products:
Cabinet Smoke Detectors (CSD)

A cabinet smoke detector takes aspirating detection a step further by protecting equipment right at the source. Unlike room-level detectors that only sense smoke once it escapes into the wider environment, a cabinet unit draws air samples directly from inside electrical or server cabinets. This means it can identify overheating or smouldering components long before room sensors would react. For installers and operators, it offers targeted protection, faster warning times, and peace of mind that critical assets are safeguarded without adding complexity to the wider fire system.

Ready to Simplify Your
Fire Detection Installations?

Contact us today to discuss your requirements and find out how our specialist fire detection
products can provide a simple, reliable, and cost-effective solution for your building.