ASD - aspirating smoke detection

Aspirating Smoke Detector FDA261

Aspirating smoke detectors from Siemens provide very early fire detection to protect critical infrastructure. The ASDs are built for the most demanding applications, ensuring effective fire detection suitable for any application size.

ASD white paper

Product Overview

Siemens offers a full range of aspirating smoke detectors, enabling customised solutions for the earliest possible fire detection. Dual wavelength technology is used to distinguish between smoke and deceptive phenomena, thus avoiding false alarms, and for very early detection of electrolyte gas particles.
FDA241

Branched pipe length: 120m

Special features:

  • Optional dust detection
  • Configuration through PC based Config tool
Product catalog
FDA261

Branched pipe length: 800m

Special features:

  • Replaceable detection chamber & aspirator; ext. slots
  • Cloud-based user and device management
  • Wirelessly configuration by APP
Product catalog
FDA221

Branched Pipe length: 50m

Special features:

  • Optional dust detection
  • Configuration through PC based config tool
Product catalog
FDA262

Branched pipe length: 1200m

Special features:

  • Replaceable detection chamber & aspirator; ext. slots
  • Cloud-based user and device management
  • Wirelessly configuration by APP
Product catalog

The latest generation of aspirating smoke detectors - ASD+

Siemens aspirating smoke detector ASD+

What's new?

  • Two new ASDs, ASD+, have been added to the product range - FDA261 and FDA262
  • A single ASD+ covers up to 6700 m2
  • QR code commissioning, easier, faster installation
  • Modular design, easy component reaplacement and auto-configuration
  • Improved detection performance and capable to cover installations with the highest sensitivity requirements
ASD Connect App

ASD with App-supported commissioning

The ASD Connect App is the easy-to-use mobile tool to commission ASD+, reducing installation time and effort.

ASD modular design

ASD+ with modular design

ASD+ has a modular design, so key components can be replaced without exchanging the complete detector unit, thus extending product life time and reduce environmental footprint.

Perfectly suited for challenging environments

Aspirating smoke detectors are used where very early detection is required and where point detectors are unsuitable.
Data Center

Fire detection in data centers

In data centers, high airflows can hinder detection. ASD detectors are placed where air currents direct the smoke, enabling very early and and reliable detection.

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High-bay storage warehouse

Fire detection in high-bay storage facilities

In warehouses, point detectors on high ceilings can be too slow to detect fire. ASD detectors are placed close to the root of incipient fires, offering near immediate detection.


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Containerized energy storage solution

Fire detection in Li-ion battery energy storage systems

ASD detectors are sufficiently sensitive to detect the off-gassing of electrolyte vapor particles. This allows very early detction of lithium-ion battery fires.

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Fire detection in extreme environments

ASD is the ideal fire detection solution for small, confined spaces and harsh environments, where dust, steam and fumes are commonplace.


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In-depth technical information

Find out more about the technical features of our individual products in our dedicated product catalog.

Siemens planning support for ASD detectors

Are you planning your next fire safety project? We've got you covered. Discover our extensive planning and support documents, tool and data.

Downloads and support

Further resources

Download center

Technical support