Product comparison · 2 smoke detectors

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

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Comparison of DHI-HY-SA21A-W2(868), HY-SA21A-W2
27 specifications	A Dahua Technology DHI-HY-SA21A-W2(868) smoke detector Photoelectrical reflection detector Wireless Model DHI-HY-SA21A-W2(868) View product	B Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless Model HY-SA21A-W2 View product
Featuresidentical
Detector type	Photoelectrical reflection detector	Photoelectrical reflection detector
InterconnectableKnown for one	No	Unknown — not stated by the source
Connectivity technology	Wireless	Wireless
Bandwidth	868.3 MHz	868.3 MHz
Housing material	ABS	ABS
Product colour	White	White
Suitable for indoor use	Yes	Yes
Light alarm	Yes	Yes
LED indicators	Alarm, Fault, Power	Alarm, Fault, Power
Alarm decibels	90 dB	90 dB
Alarm mute	Yes	Yes
Maximum range	1000 m	1000 m
Mounting typeKnown for one	Surface-mounted	Unknown — not stated by the source
Poweridentical
Power source	Battery	Battery
Input voltage	3 V	3 V
Battery life	3 year(s)	3 year(s)
Battery low indication	Yes	Yes
Battery type	CR123A	CR123A
Compatible battery sizes	CR123A	CR123A
Operational conditionsidentical
Operating temperature (T-T)	-10 - 55 °C	-10 - 55 °C
Operating relative humidity (H-H)	0 - 95%	0 - 95%
Certificatesidentical
CertificationKnown for one	EN 14604:2005+AC:2008	Unknown — not stated by the source
Weight & dimensionsidentical
Diameter	9.8 cm	9.8 cm
Height	43.1 mm	43.1 mm
Weight	140 g	140 g
Batteryidentical
Battery technology	Lithium	Lithium
Sustainabilityidentical
Compliance certificates	CE	CE

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.