Product comparison · 2 smoke detectors

Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless vs Hama HSD1 Photoelectrical reflection detector Wireless

10specifications compared
4differ
6identical
25known for one product only

Key differences

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

Side by side

Differences highlightedShow differences only

Comparison of HY-SA21A-W2, HSD1
35 specifications	A Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless Model HY-SA21A-W2 View product	B Hama HSD1 Photoelectrical reflection detector Wireless Model HSD1 View product
Features1 differ
Detector type	Photoelectrical reflection detector	Photoelectrical reflection detector
Connectivity technology	Wireless	Wireless
BandwidthKnown for one	868.3 MHz	Unknown — not stated by the source
Housing materialKnown for one	ABS	Unknown — not stated by the source
Product colour	White	White
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
Power1 differ
Power source	Battery	Battery
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
Compatible battery sizes	CR123A	CR123A
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
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
Batteryidentical
Battery technology	Lithium	Lithium
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.

More smoke detector comparisons

All smoke detector comparisons