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Empowering Immersive Visual Experiences: Dahua Unveils Intelligent LED Solutions at ISE 2026

2026-03-03

Empowering Immersive Visual Experiences: Dahua Unveils Intelligent LED Solutions at ISE 2026

HY-SA21A-W2(868)

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HY-SA21A-W2(868)

Wireless Smoke Alarm

Key Points
    · Split-spectrum sensor technology
    · Test and silence features in one single button
    · Loud sound output over 85 dB(A) at 3 meters
    · Low quiescent current consumption
    · Surface-mount device (SMD) circuit board design
    · Low battery warning signal
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Datasheet

Specifications

Working Principle

Collection Type

Smoke

Sampling Period

10 s

Sensor Type

Photoelectric

Alarm

Alarm Type

Smoke alarm, fault warning, low battery warning

Alarm Volume

85dB–90dB(A) at 3 m (9.84 ft)

Alarm Mode

Visual and audible alarm

Silence Function

Yes

Silence Duration

About 12 min

Alarm Response Threshold

0.2 dB/m - 0.3 dB/m

Basic Parameters

Indicator Light

Red and green LED indicator

Led Instructions

Standby: Green indicator flashes once per minute
Alarm: Red indicator flashes once per second
Fault: Red indicator flashes once per minute

Low battery warning: Red indicator flashes once per minute

Coverage Area

When the height of the space is less than 8 m (26.25 ft), the protection area of a device is 20 m2–40 m2

Power Supply

Battery Life

3 year

Operating Voltage

3V CR123A lithium battery (replaceable)

Operating Current

Monitoring current: ≤ 35uA
Alarm current: ≤ 35mA

Operating Ambient

Operating Environment

Indoor

Operating Temperature

-10°C to +55°C (+14°F to +131°F)

Operating Humidity

≤ 95% RH (non condensing)

Appearance

Color

White

Casing

ABS

Dimensions

φ98mm × H43.1mm (φ3.85" × H1.70")

Weight

140 g (0.30 lb)

Installation

Ceiling Mount

Certifications

Certifications

TÜV and CE listed

Compliance Standard

EN 14604:2005+AC:2008

Wireless

Carrier Frequency

868 MHz–868.3 MHz

Communication Distance

Up to 1000 m (3280.84 ft) in an open space

Communication Mechanism

Two-way

Frequency Hopping

Yes

Encryption Mode

AES128

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