Dahua HY-SA21A-W2 Wireless Photoelectric Smoke Alarm, 85 dB, 868 MHz
Dahua HY-SA21A-W2 868 MHz wireless photoelectric smoke alarm with 85-90 dB siren, test / silence button, CR123A battery for 3 years, EN 14604 certified.
Read MoreSpecs
Brand
Dahua
Model
DHI-HY-SA21A-W2(868)
Product Type
Wireless smoke alarm
Sensor Type
Photoelectric
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Dahua HY-SA21A-W2 Wireless Photoelectric Smoke Alarm, 85 dB, 868 MHz
The Dahua HY-SA21A-W2 is a ceiling-mounted wireless smoke alarm that also reports to a Dahua AirShield alarm hub. It combines a photoelectric smoke sensor, an 85-90 dB(A) siren with light alarm, a single test and silence button and two-way 868 MHz radio with up to 1,000 m range. It suits homes, offices and shops that want fire warnings on the same app as their intrusion alarm.
Main Specs
- Photoelectric smoke sensor, 10 s sampling
- Sound and light alarm, 85-90 dB(A) at 3 m
- Test and silence in one button (about 12 min silence)
- Covers 20-40 m² under ceilings up to 8 m
- Two-way 868 MHz radio, up to 1,000 m open space, AES128
- Battery: replaceable CR123A, 3 years; low-battery warning
- Ceiling mount, Ø98 x 43.1 mm, 140 g
- EN 14604 certified (TÜV and CE)
- Indoor, -10 °C to +55 °C
- Ideal for adding smoke detection to a Dahua wireless alarm
Main Characteristics
Brand
Dahua
Model
DHI-HY-SA21A-W2(868)
Product Type
Wireless smoke alarm
Sensor Type
Photoelectric
Sampling Period
10 s
Alarm Volume
85-90 dB(A) at 3 m
Alarm Mode
Visual and audible
Silence Duration
About 12 min
Coverage Area
20-40 m² (ceiling height < 8 m)
Carrier Frequency
868-868.3 MHz
Communication Mechanism
Two-way
Encryption
AES128
Frequency Hopping
Yes
Communication Distance
Up to 1,000 m in open space
Power Supply
3 V CR123A lithium battery (replaceable)
Battery Life
3 years
Color
White
Dimensions
Ø98 x 43.1 mm
Weight
140 g
Installation
Ceiling mount
Environment
Indoor, -10 °C to +55 °C
Certifications
TÜV, CE, EN 14604:2005+AC:2008
