Product comparison · 2 panic buttons

Dahua Technology DHI-ARD821-W2 panic button Wireless Alarm vs Dahua Technology DHI-ARD822-W2 panic button Wireless Alarm

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Differences highlightedShow differences only

Comparison of DHI-ARD821-W2, DHI-ARD822-W2
20 specifications	A Dahua Technology DHI-ARD821-W2 panic button Wireless Alarm Model DHI-ARD821-W2 View product	B Dahua Technology DHI-ARD822-W2 panic button Wireless Alarm Model DHI-ARD822-W2 View product
Features1 differ
Connectivity technology	Wireless	Wireless
Purpose	Alarm	Alarm
Product colour	White	White
Housing materialDiffers	Acrylonitrile butadiene styrene (ABS), Polystyrene (PS)	Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC)
Transmission distance	1300 m	1300 m
Operating frequency	433.1/434.6 MHz	433.1/434.6 MHz
BacklightKnown for one	Yes	Unknown — not stated by the source
CertificationKnown for one	CE	Unknown — not stated by the source
Poweridentical
Power source	Battery	Battery
Battery type	CR2032	CR2032
Alarm current	28 mA	28 mA
Operational conditionsidentical
Operating temperature (T-T)	-10 - 55 °C	-10 - 55 °C
Weight & dimensionsidentical
Width	36 mm	36 mm
Depth	55 mm	55 mm
Height	14.2 mm	14.2 mm
Weight	18 g	18 g
Package width	59.5 mm	59.5 mm
Package depth	95 mm	95 mm
Package height	30.5 mm	30.5 mm
Package weight	48 g	48 g

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.