Product comparison · 2 smoke detectors

Dahua Technology FAD122A-W smoke detector Photoelectrical reflection detector Wireless vs Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless

14specifications compared
6differ
8identical
11known for one product only

Key differences

The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 435.3 MHz more bandwidth than the Dahua Technology FAD122A-W smoke detector Photoelectrical reflection detector Wireless (868.3 MHz vs 433 MHz). The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 10 dB more alarm decibels than the Dahua Technology FAD122A-W smoke detector Photoelectrical reflection detector Wireless (90 dB vs 80 dB). The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 850 m more maximum range than the Dahua Technology FAD122A-W smoke detector Photoelectrical reflection detector Wireless (1000 m vs 150 m).

Bandwidth
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:433 MHz
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:868.3 MHz
Alarm decibels
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:80 dB
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:90 dB
Maximum range
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:150 m
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:1000 m
Diameter
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:10.3 cm
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:9.8 cm
Height
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:41 mm
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:43.1 mm
Weight
- FAD122A-W smoke detector Photoelectrical reflection detector Wireless:110 g
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:140 g

Side by side

Differences highlightedShow differences only

Comparison of FAD122A-W, HY-SA21A-W2
25 specifications	A Dahua Technology FAD122A-W smoke detector Photoelectrical reflection detector Wireless Model FAD122A-W View product	B Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless Model HY-SA21A-W2 View product
Features3 differ
BandwidthDiffers	433 MHz	868.3 MHz
Housing materialKnown for one	Unknown — not stated by the source	ABS
Suitable for indoor useKnown for one	Unknown — not stated by the source	Yes
Light alarmKnown for one	Unknown — not stated by the source	Yes
LED indicatorsKnown for one	Unknown — not stated by the source	Alarm, Fault, Power
Alarm decibelsDiffers	80 dB	90 dB
Alarm muteKnown for one	Unknown — not stated by the source	Yes
Maximum rangeDiffers	150 m	1000 m
Poweridentical
Input voltageKnown for one	Unknown — not stated by the source	3 V
Battery low indicationKnown for one	Unknown — not stated by the source	Yes
Battery typeKnown for one	Unknown — not stated by the source	CR123A
Compatible battery sizesKnown for one	Unknown — not stated by the source	CR123A
Battery voltageKnown for one	3.6 V	Unknown — not stated by the source
Weight & dimensions3 differ
DiameterDiffers	10.3 cm	9.8 cm
HeightDiffers	41 mm	43.1 mm
WeightDiffers	110 g	140 g
Sustainabilityidentical
Compliance certificatesKnown for one	Unknown — not stated by the source	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.

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