Product comparison · 2 motion detectors

Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White vs Dahua Technology PFM861-B300 Wired Ceiling/wall White

15specifications compared
12differ
3identical
18known for one product only

Key differences

The Dahua Technology PFM861-B300 Wired Ceiling/wall White has 16 dBmW more transmit power than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (26 dBmW vs 10 dBmW). The Dahua Technology PFM861-B300 Wired Ceiling/wall White has 435 m more detection distance than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (450 m vs 15 m). The Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White has 10 - 90% more operating relative humidity (H-H) than the Dahua Technology PFM861-B300 Wired Ceiling/wall White (10 - 90% vs 0 - 90%). Mounting type: Wall on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, Ceiling/wall on the Dahua Technology PFM861-B300 Wired Ceiling/wall White. Housing material: Polycarbonate (PC) on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, Aluminium, Polycarbonate (PC) on the Dahua Technology PFM861-B300 Wired Ceiling/wall White.

Mounting type
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wall
- PFM861-B300 Wired Ceiling/wall White:Ceiling/wall
Connectivity technology
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wireless
- PFM861-B300 Wired Ceiling/wall White:Wired
Transmit power
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:10 dBmW
- PFM861-B300 Wired Ceiling/wall White:26 dBmW
Detection distance
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:15 m
- PFM861-B300 Wired Ceiling/wall White:450 m
Operating frequency
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:433.1 - 434.6 MHz
- PFM861-B300 Wired Ceiling/wall White:24050 - 24150 MHz
Operating relative humidity (H-H)
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:10 - 90%
- PFM861-B300 Wired Ceiling/wall White:0 - 90%
Operating temperature (T-T)
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:-25 - 60 °C
- PFM861-B300 Wired Ceiling/wall White:-40 - 75 °C
Width
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:106 mm
- PFM861-B300 Wired Ceiling/wall White:235 mm

Side by side

Differences highlightedShow differences only

Comparison of DHI-ARD2251E-W2, PFM861-B300
33 specifications	A Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White Model DHI-ARD2251E-W2 View product	B Dahua Technology PFM861-B300 Wired Ceiling/wall White Model PFM861-B300 View product
Features2 differ
Mounting typeDiffers	Wall	Ceiling/wall
PlacementKnown for one	Indoor, Outdoor	Unknown — not stated by the source
LED indicatorsKnown for one	Alarm	Unknown — not stated by the source
Security algorithmsKnown for one	128-bit AES	Unknown — not stated by the source
Housing materialDiffers	Polycarbonate (PC)	Aluminium, Polycarbonate (PC)
LED colourKnown for one	Green	Unknown — not stated by the source
Installation height (max)Known for one	Unknown — not stated by the source	3 m
Installation height (min)Known for one	Unknown — not stated by the source	1 m
Security4 differ
Sensor typeKnown for one	Passive infrared (PIR) sensor/Microwave sensor	Unknown — not stated by the source
Connectivity technologyDiffers	Wireless	Wired
Transmit powerDiffers	10 dBmW	26 dBmW
Alarm functionKnown for one	Yes	Unknown — not stated by the source
Detection distanceDiffers	15 m	450 m
InterfaceKnown for one	RF	Unknown — not stated by the source
Operating frequencyDiffers	433.1 - 434.6 MHz	24050 - 24150 MHz
Transmission distanceKnown for one	1200 m	Unknown — not stated by the source
Poweridentical
Power source typeKnown for one	Battery	Unknown — not stated by the source
Battery typeKnown for one	CR123A	Unknown — not stated by the source
Number of batteries supportedKnown for one	4	Unknown — not stated by the source
Operational conditions2 differ
Operating relative humidity (H-H)Differs	10 - 90%	0 - 90%
Operating temperature (T-T)Differs	-25 - 60 °C	-40 - 75 °C
Storage temperature (T-T)Known for one	-25 - 60 °C	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	106 mm	235 mm
DepthDiffers	94 mm	175 mm
HeightDiffers	211 mm	47.5 mm
WeightDiffers	651 g	1.65 kg
Packaging dataidentical
Package widthKnown for one	251 mm	Unknown — not stated by the source
Package depthKnown for one	116 mm	Unknown — not stated by the source
Package heightKnown for one	119 mm	Unknown — not stated by the source
Package weightKnown for one	860 g	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.

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