China configuration reference
- Monitoring area
- 4,000 m²
- Sampling pipe
- 400 m
- Sampling holes
- 60
- Farthest hole
- 110 m per channel
SecuriSmoke ASD · Product
High-performance two-channel aspirating smoke detector
ASD 535-4
SecuriSmoke ASD 535-4 provides two independent detection channels for two protection zones, extensive spaces and separately calculated sampling networks in demanding applications.
Mainland China product-sheet area4,000 m²
Where it fits.
Where it does not.
Start with zone structure, pipe complexity, environment, interfaces and destination-market approval—not maximum area alone.
Screen this model when
- Two protection zones requiring independent sampling, indication and alarm evaluation
- Extensive facilities with two separately calculated networks or complex zoning
- Projects requiring high suction pressure, a wide temperature range and extensive event memory
Usually not the first choice when
- A small single room or project where one channel already satisfies the calculation
- Corrosive environments without the formally selected ASD 535 HD configuration and accessories
- Simple replacement work where two-channel power, interfaces, zoning and maintenance have not been reviewed
Monitoring scope and
technical data
The two data bases below come from different official product materials. Do not combine them into one design.
English brochure reference
- Pipe capability
- 2 × 300 m
- Class A / B / C holes
- 35 / 112 / 240 total (Classes A / B / C)
Usable values depend on the applicable class, topology, hole sizes, pressure, transport time and certificate configuration.
| Alarm sensitivity | 0.02% to 10% obs/m |
|---|---|
| Pre-signal | From 0.002%/m |
| Suction pressure | > 400 Pa per channel |
| Permissible temperature range | -30 °C to +60 °C |
| Protection type / humidity | IP 54 / up to 95% RH, non-condensing |
| Supply voltage | 10.5 to 30 VDC |
| Typical current consumption | 260 to 290 mA at 24 VDC |
| Event memory | 16,000,000 |
| Programmable relays | 13 |
| Smoke-level display | 2 × 10-level LED |
| Dimensions | 265 × 397 × 146 mm |
| Weight | 4.1 kg |
Project rule: published maxima are not construction values. Use the current ASD PipeFlow version and obtain competent destination-market review.
Pipe, detection, environment
and installation constraints
These conditions change sampling performance, transport time and false-alarm control.
Sampling pipe
Each channel requires its own PipeFlow model and verification of hole sizes, pressure, transport time and balance. A combined total does not override the limit of either channel.
Detection
Two channels can protect separate zones, but alarm, isolation, fault and fire-system interface logic must be defined in the overall fire strategy.
Environment
The detector operating range is -30 °C to +60 °C and up to 95% relative humidity without condensation. Heavy dust, moisture and deep-freeze conditions require appropriate pre-treatment.
Installation
Confirm simultaneous two-channel power demand, interface capacity, accessible maintenance space and permanent pipe identification to prevent cross-connection during service.
Adjacent model differences
A larger model is not automatically the better model. Choose the clearest compliant structure.
COMPARE
ASD 535-4 vs ASD 535-3
ASD 535-3 is the single-channel configuration and is usually more efficient when one independently calculated network meets the zoning requirement.
Review ASD 535-3 ↗FULL SERIESCompare all four models
Channels, pipe capability, sensitivity, environment, applications and limitations.
Open comparison ↗Approvals and destination-market use
An approval mark does not mean automatic acceptance in every country, configuration or fire system.
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Confirm the exact certificate, model suffix, approved configuration, current validity and local authority requirement before quotation or design.
Review certificate previews and scope notes →Official manufacturer material
Use the current SECURITON release for final design, ordering and acceptance.
Common selection questions
Public answers support first-stage screening; formal confirmation requires project inputs.
Does the 4,000 m² China figure apply to one channel?
No. It is the mainland China two-channel product-sheet configuration. Each channel and every international project must be evaluated separately against the applicable approval, topology and PipeFlow result.
Can the two channels monitor two different rooms?
Yes, this is a typical use case, provided each channel independently satisfies the pipe calculation, zoning, alarm interface and destination-market approval requirements.
Is ASD 535-4 always better than ASD 535-3?
No. ASD 535-4 is appropriate when two independent channels are required. If one channel meets the protection and calculation requirements, ASD 535-3 is generally simpler to design, commission and maintain.
Manufacturer sources and review record
- SECURITON “SecuriSmoke ASD Product Brochure”, V2.0 EN, document 831055 / 550138 / 52.01.
- SECURITON official Chinese SecuriSmoke ASD brochure, used only for the separately labelled mainland China configuration.
- SECURITON ASD design documentation and current ASD PipeFlow for project-specific calculation.
Fact / advice boundary: manufacturer data is presented as fact; model screening and project sequence are PEIEN technical recommendations; final values remain project assumptions until reviewed.
Last reviewed: 27 July 2026 by the PEIEN technical content team. Project-level review must be completed by a suitably qualified fire professional or an ASD practitioner with relevant project experience.