Product comparison · 2 smoke detectors

Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired vs Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless

8specifications compared
4differ
4identical
19known for one product only

Key differences

The Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired has 2.9 mm more height than the Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless (46 mm vs 43.1 mm). The Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless has 20 g more weight than the Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired (140 g vs 120 g). Connectivity technology: Wired on the Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired, Wireless on the Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless. Power source: AC on the Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired, Battery on the Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless.

Connectivity technology
- DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired:Wired
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:Wireless
Power source
- DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired:AC
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:Battery
Height
- DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired:46 mm
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:43.1 mm
Weight
- DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired:120 g
- HY-SA21A-W2 Photoelectrical reflection detector Wireless:140 g

Side by side

Differences highlightedShow differences only

Comparison of DHI-FAD201A, HY-SA21A-W2
27 specifications	A Dahua Technology DHI-FAD201A smoke detector Photoelectrical reflection detector Interconnectable Wired Model DHI-FAD201A View product	B Dahua Technology HY-SA21A-W2 Photoelectrical reflection detector Wireless Model HY-SA21A-W2 View product
Features1 differ
Detector type	Photoelectrical reflection detector	Photoelectrical reflection detector
Connectivity technologyDiffers	Wired	Wireless
BandwidthKnown for one	Unknown — not stated by the source	868.3 MHz
Housing material	ABS	ABS
Product colour	White	White
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 decibelsKnown for one	Unknown — not stated by the source	90 dB
Alarm muteKnown for one	Unknown — not stated by the source	Yes
Maximum rangeKnown for one	Unknown — not stated by the source	1000 m
InterconnectableKnown for one	Yes	Unknown — not stated by the source
Power1 differ
Power sourceDiffers	AC	Battery
Input voltageKnown for one	Unknown — not stated by the source	3 V
Battery lifeKnown for one	Unknown — not stated by the source	3 year(s)
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
Operational conditionsidentical
Operating temperature (T-T)	-10 - 55 °C	-10 - 55 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	0 - 95%
Weight & dimensions2 differ
DiameterKnown for one	Unknown — not stated by the source	9.8 cm
HeightDiffers	46 mm	43.1 mm
WeightDiffers	120 g	140 g
WidthKnown for one	103 mm	Unknown — not stated by the source
DepthKnown for one	104 mm	Unknown — not stated by the source
Batteryidentical
Battery technologyKnown for one	Unknown — not stated by the source	Lithium
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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