Product comparison · 2 smoke detectors

Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless vs Hama HSD1 Photoelectrical reflection detector Wireless

10specifications compared
4differ
6identical
28known for one product only

Key differences

The Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless has 5 dB more alarm decibels than the Hama HSD1 Photoelectrical reflection detector Wireless (90 dB vs 85 dB). The Hama HSD1 Photoelectrical reflection detector Wireless has 0.2 cm more diameter than the Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless (10 cm vs 9.8 cm). The Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless has 8.1 mm more height than the Hama HSD1 Photoelectrical reflection detector Wireless (43.1 mm vs 35 mm). Battery life: 3 year(s) on the Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless, 10 year(s) on the Hama HSD1 Photoelectrical reflection detector Wireless.

Alarm decibels
- DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless:90 dB
- HSD1 Photoelectrical reflection detector Wireless:85 dB
Battery life
- DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless:3 year(s)
- HSD1 Photoelectrical reflection detector Wireless:10 year(s)
Diameter
- DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless:9.8 cm
- HSD1 Photoelectrical reflection detector Wireless:10 cm
Height
- DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless:43.1 mm
- HSD1 Photoelectrical reflection detector Wireless:35 mm

Side by side

Differences highlightedShow differences only

Comparison of DHI-HY-SA21A-W2(868), HSD1
38 specifications	A Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless Model DHI-HY-SA21A-W2(868) View product	B Hama HSD1 Photoelectrical reflection detector Wireless Model HSD1 View product
Features1 differ
InterconnectableKnown for one	No	Unknown — not stated by the source
BandwidthKnown for one	868.3 MHz	Unknown — not stated by the source
Housing materialKnown for one	ABS	Unknown — not stated by the source
Suitable for indoor useKnown for one	Yes	Unknown — not stated by the source
Light alarmKnown for one	Yes	Unknown — not stated by the source
LED indicatorsKnown for one	Alarm, Fault, Power	Unknown — not stated by the source
Alarm decibelsDiffers	90 dB	85 dB
Alarm muteKnown for one	Yes	Unknown — not stated by the source
Maximum rangeKnown for one	1000 m	Unknown — not stated by the source
Mounting typeKnown for one	Surface-mounted	Unknown — not stated by the source
Power1 differ
Input voltageKnown for one	3 V	Unknown — not stated by the source
Battery lifeDiffers	3 year(s)	10 year(s)
Battery low indicationKnown for one	Yes	Unknown — not stated by the source
Battery typeKnown for one	CR123A	Unknown — not stated by the source
Backup batteryKnown for one	Unknown — not stated by the source	Yes
Number of batteries supportedKnown for one	Unknown — not stated by the source	1
Operational conditionsidentical
Operating temperature (T-T)Known for one	-10 - 55 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	0 - 95%	Unknown — not stated by the source
Certificatesidentical
CertificationKnown for one	EN 14604:2005+AC:2008	Unknown — not stated by the source
Weight & dimensions2 differ
DiameterDiffers	9.8 cm	10 cm
HeightDiffers	43.1 mm	35 mm
WeightKnown for one	140 g	Unknown — not stated by the source
WidthKnown for one	Unknown — not stated by the source	100 mm
DepthKnown for one	Unknown — not stated by the source	100 mm
Sustainabilityidentical
Compliance certificatesKnown for one	CE	Unknown — not stated by the source
Packaging contentidentical
Mounting kitKnown for one	Unknown — not stated by the source	Yes
ManualKnown for one	Unknown — not stated by the source	Yes
Packaging dataidentical
Package widthKnown for one	Unknown — not stated by the source	155 mm
Package depthKnown for one	Unknown — not stated by the source	116 mm
Package heightKnown for one	Unknown — not stated by the source	50 mm
Package weightKnown for one	Unknown — not stated by the source	144 g
Quantity per packKnown for one	Unknown — not stated by the source	1 pc(s)

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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