Product comparison · 2 panic buttons

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

Side by side

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
Housing materialDiffers	Acrylonitrile butadiene styrene (ABS), Polystyrene (PS)	Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC)
BacklightKnown for one	Yes	Unknown — not stated by the source
CertificationKnown for one	CE	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.