Name: Smoke Extraction System
Brand: Dahua
SKU: HY-ASD420B

Draws air through a pipe network and detects smoke before it becomes visible.

An aspirating smoke detection system that pulls air continuously through sampling pipes into a laser detection chamber. Infrared and blue dual-wavelength laser identification separates moisture and dirt particles from smoke, and a 7-inch touch screen shows the smoke concentration.

2000 m²Monitoring Area

2 × 120 mSampling Pipe

0.001%-30% obs/mDetection Sensitivity

24 V DCSupply Voltage

IP30Protection Grade

-30 °C / +60 °COperating Temperature

Key features

2000m²

Large monitoring area

A single unit covers a high-volume space through its pipe network.

120m

Long sampling line

Each pipe runs up to 120 m and carries 20 sampling holes.

7inch

Touch operation

The color screen shows smoke concentration and changes parameters from the same interface.

3airflow sensors

Pipe fault monitoring

MEMS airflow sensing spots blockage and breakage.

24W

Low power draw

At the default setting its consumption stays limited.

25mm

Sampling pipe size

The pipe measures 25 mm outside and 21 mm inside.

IN DAILY USE

Adapts to its surroundingsThe dynamic self-learning algorithm adapts to conditions in the monitored region.

Maintenance stays simpleIt tracks sensor life and reports when a replacement is due.

Remote interventionIt resets the alarm remotely over the IoT platform or the RS-485 link.

Technical Specification

Model

DH-HY-ASD420B

Dimensions (L × W × H)

380 mm × 103 mm × 278 mm

Operation

7-inch color touch screen

Installation

Wall mount

Detection Sensitivity

0.001%-30% obs/m

Alarm Levels

Warning, action, alarm 1, alarm 2

Sampling Pipe

2 × 120 m

Sampling Address

2 sampling pipes, 2 suction pumps, 2 sampling tubes, 1 detection chamber

Monitoring Area

> 2000 m²

Sampling Tube Apertures

Inner: 21 mm; outer: 25 mm

Addressing Function

Support

Number of Sampling Holes

2 × 20

Relay

7 channels, 30 V DC 2 A

Event Records

200,000

Airflow Sensor

Communication Interfaces

RS-485, Ethernet, 4G

Supply Voltage

24 V DC (a standard power box with backup function is required)

Power Consumption

< 24 W (default setting)

Operating Temperature

-30°C to +60°C (-22°F to +140°F)

Operating Humidity

≤ 90% RH (non-condensing)

Protection

IP30

Alarm Method

Visual and audible alarm; notifications on IoT platform, message, telephone

Certifications

GB 15631-2008

Draws air through a pipe network and detects smoke before it becomes visible.

2000 m²Monitoring Area

2 × 120 mSampling Pipe

0.001%-30% obs/mDetection Sensitivity

24 V DCSupply Voltage

IP30Protection Grade

-30 °C / +60 °COperating Temperature

Key features

2000m²

Large monitoring area

A single unit covers a high-volume space through its pipe network.

120m

Long sampling line

Each pipe runs up to 120 m and carries 20 sampling holes.

7inch

Touch operation

The color screen shows smoke concentration and changes parameters from the same interface.

3airflow sensors

Pipe fault monitoring

MEMS airflow sensing spots blockage and breakage.

24W

Low power draw

At the default setting its consumption stays limited.

25mm

Sampling pipe size

The pipe measures 25 mm outside and 21 mm inside.

IN DAILY USE

Adapts to its surroundingsThe dynamic self-learning algorithm adapts to conditions in the monitored region.

Maintenance stays simpleIt tracks sensor life and reports when a replacement is due.

Remote interventionIt resets the alarm remotely over the IoT platform or the RS-485 link.

Technical Specification

Model

DH-HY-ASD420B

Dimensions (L × W × H)

380 mm × 103 mm × 278 mm

Operation

7-inch color touch screen

Installation

Wall mount

Detection Sensitivity

0.001%-30% obs/m

Alarm Levels

Warning, action, alarm 1, alarm 2

Sampling Pipe

2 × 120 m

Sampling Address

2 sampling pipes, 2 suction pumps, 2 sampling tubes, 1 detection chamber

Monitoring Area

> 2000 m²

Sampling Tube Apertures

Inner: 21 mm; outer: 25 mm

Addressing Function

Support

Number of Sampling Holes

2 × 20

Relay

7 channels, 30 V DC 2 A

Event Records

200,000

Airflow Sensor

Communication Interfaces

RS-485, Ethernet, 4G

Supply Voltage

24 V DC (a standard power box with backup function is required)

Power Consumption

< 24 W (default setting)

Operating Temperature

-30°C to +60°C (-22°F to +140°F)

Operating Humidity

≤ 90% RH (non-condensing)

Protection

IP30

Alarm Method

Visual and audible alarm; notifications on IoT platform, message, telephone

Certifications

GB 15631-2008

Smoke Extraction System

Datasheet

HY-ASD420B

Kullanım Kılavuzu

HY-ASD420B

Teknik Çizim

HY-ASD420B

Fotoğraf

HY-ASD420B

Smoke Extraction System

Datasheet

HY-ASD420B

Kullanım Kılavuzu

HY-ASD420B

Teknik Çizim

HY-ASD420B

Fotoğraf

HY-ASD420B