Product comparison · 2 smoke detectors

Dahua Technology DHI-HY-SA40A-R8 smoke detector Interconnectable Wired vs Techly I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless

Key differences

Connectivity technology
- DHI-HY-SA40A-R8 smoke detector Interconnectable Wired:Wired
- I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless:Wireless
Battery voltage
- DHI-HY-SA40A-R8 smoke detector Interconnectable Wired:3 V
- I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless:9 V
Operating relative humidity (H-H)
- DHI-HY-SA40A-R8 smoke detector Interconnectable Wired:0 - 95%
- I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless:0 - 80%
Width
- DHI-HY-SA40A-R8 smoke detector Interconnectable Wired:81.5 mm
- I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless:128 mm
Depth
- DHI-HY-SA40A-R8 smoke detector Interconnectable Wired:51.6 mm
- I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless:38 mm

Differences highlightedShow differences only

Comparison of DHI-HY-SA40A-R8, I-ALARM-SMOKE
17 specifications	A Dahua Technology DHI-HY-SA40A-R8 smoke detector Interconnectable Wired Model DHI-HY-SA40A-R8 View product	B Techly I-ALARM-SMOKE smoke detector Photoelectrical reflection detector Wireless Model I-ALARM-SMOKE View product
Features1 differ
Detector typeKnown for one	Unknown — not stated by the source	Photoelectrical reflection detector
Connectivity technologyDiffers	Wired	Wireless
Product colour	White	White
Alarm decibelsKnown for one	Unknown — not stated by the source	85 dB
Maximum rangeKnown for one	Unknown — not stated by the source	3 m
InterconnectableKnown for one	Yes	Unknown — not stated by the source
Housing materialKnown for one	ABS	Unknown — not stated by the source
Power1 differ
Power source	Battery	Battery
Battery voltageDiffers	3 V	9 V
Operational conditions1 differ
Operating temperature (T-T)	-10 - 55 °C	-10 - 55 °C
Operating relative humidity (H-H)Differs	0 - 95%	0 - 80%
Weight & dimensions2 differ
WidthDiffers	81.5 mm	128 mm
DepthDiffers	51.6 mm	38 mm
WeightKnown for one	110 g	Unknown — not stated by the source
Packaging contentidentical
ManualKnown for one	Unknown — not stated by the source	Yes
Packaging dataidentical
Quantity per packKnown for one	Unknown — not stated by the source	1 pc(s)
Batteryidentical
Battery technologyKnown for one	Lithium-Ion (Li-Ion)	Unknown — not stated by the source

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.