Product comparison · 2 smoke detectors

Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless vs Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless

21specifications compared
6differ
15identical
11known for one product only

Key differences

The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 0.3 MHz more bandwidth than the Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless (868.3 MHz vs 868 MHz). The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 5 dB more alarm decibels than the Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless (90 dB vs 85 dB). The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 997 m more maximum range than the Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless (1000 m vs 3 m). LED indicators: Alarm, Fault, Power on the Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless, Yes on the Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless. Battery life: 3 year(s) on the Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless, 10 year(s) on the Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless.

Bandwidth
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:868.3 MHz
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:868 MHz
LED indicators
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:Alarm, Fault, Power
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:Yes
Alarm decibels
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:90 dB
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:85 dB
Maximum range
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:1000 m
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:3 m
Battery life
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:3 year(s)
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:10 year(s)
Weight
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:140 g
- HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless:138 g

Side by side

Differences highlightedShow differences only

Comparison of HY-SA21A-W2, HY-SA30A-R8
32 specifications	A Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless Model HY-SA21A-W2 View product	B Dahua Technology HY-SA30A-R8 smoke detector Photoelectrical reflection detector Interconnectable Wireless Model HY-SA30A-R8 View product
Features4 differ
InterconnectableKnown for one	Unknown — not stated by the source	Yes
Best usesKnown for one	Unknown — not stated by the source	Home
BandwidthDiffers	868.3 MHz	868 MHz
Test buttonKnown for one	Unknown — not stated by the source	Yes
LED indicatorsDiffers	Alarm, Fault, Power	Yes
Alarm decibelsDiffers	90 dB	85 dB
Maximum rangeDiffers	1000 m	3 m
Mounting typeKnown for one	Unknown — not stated by the source	Surface-mounted
Number of simultaneously connected devices (max)Known for one	Unknown — not stated by the source	24
Easy to installKnown for one	Unknown — not stated by the source	Yes
Power1 differ
Battery lifeDiffers	3 year(s)	10 year(s)
Battery voltageKnown for one	Unknown — not stated by the source	3 V
Input voltageKnown for one	3 V	Unknown — not stated by the source
Compatible battery sizesKnown for one	CR123A	Unknown — not stated by the source
Certificatesidentical
CertificationKnown for one	Unknown — not stated by the source	TÜV and CE
Weight & dimensions1 differ
WeightDiffers	140 g	138 g
Sustainabilityidentical
Compliance certificatesKnown for one	CE	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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