Product comparison · 2 motion detectors

Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White vs Dahua Technology PFR4K-B240 Wired Ceiling/wall White

20specifications compared
18differ
2identical
17known for one product only

Key differences

The Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White has 70° more detection angle than the Dahua Technology PFR4K-B240 Wired Ceiling/wall White (90° vs 20°). The Dahua Technology PFR4K-B240 Wired Ceiling/wall White has 225 m more detection distance than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (240 m vs 15 m). The Dahua Technology PFR4K-B240 Wired Ceiling/wall White has 78.9 mm more width than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (184.9 mm vs 106 mm). 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 PFR4K-B240 Wired Ceiling/wall White. International Protection (IP) code: IP66 on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, IP67 on the Dahua Technology PFR4K-B240 Wired Ceiling/wall White.

Mounting type
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wall
- PFR4K-B240 Wired Ceiling/wall White:Ceiling/wall
Detection angle
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:90°
- PFR4K-B240 Wired Ceiling/wall White:20°
International Protection (IP) code
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:IP66
- PFR4K-B240 Wired Ceiling/wall White:IP67
Connectivity technology
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wireless
- PFR4K-B240 Wired Ceiling/wall White:Wired
Detection distance
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:15 m
- PFR4K-B240 Wired Ceiling/wall White:240 m
Operating frequency
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:433.1 - 434.6 MHz
- PFR4K-B240 Wired Ceiling/wall White:24000 MHz
Power source type
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Battery
- PFR4K-B240 Wired Ceiling/wall White:AC, DC
Operating relative humidity (H-H)
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:10 - 90%
- PFR4K-B240 Wired Ceiling/wall White:0 - 95%

Side by side

Differences highlightedShow differences only

Comparison of DHI-ARD2251E-W2, PFR4K-B240
37 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 PFR4K-B240 Wired Ceiling/wall White Model PFR4K-B240 View product
Features3 differ
Mounting typeDiffers	Wall	Ceiling/wall
LED indicatorsKnown for one	Alarm	Unknown — not stated by the source
Security algorithmsKnown for one	128-bit AES	Unknown — not stated by the source
Detection angleDiffers	90°	20°
Housing materialKnown for one	Polycarbonate (PC)	Unknown — not stated by the source
International Protection (IP) codeDiffers	IP66	IP67
LED colourKnown for one	Green	Unknown — not stated by the source
CertificationKnown for one	Unknown — not stated by the source	CE:EN 50385; EN 55032; EN 55024; EN 55035; EN 50130-4; ETSI EN 301 489-1; ETSI EN 301 489-3; EN 60950-1 CE RED: EN 300440
Security3 differ
Sensor typeKnown for one	Passive infrared (PIR) sensor/Microwave sensor	Unknown — not stated by the source
Connectivity technologyDiffers	Wireless	Wired
Transmit powerKnown for one	10 dBmW	Unknown — not stated by the source
Alarm functionKnown for one	Yes	Unknown — not stated by the source
Detection distanceDiffers	15 m	240 m
InterfaceKnown for one	RF	Unknown — not stated by the source
Operating frequencyDiffers	433.1 - 434.6 MHz	24000 MHz
Transmission distanceKnown for one	1200 m	Unknown — not stated by the source
Power1 differ
Power source typeDiffers	Battery	AC, DC
Battery typeKnown for one	CR123A	Unknown — not stated by the source
Number of batteries supportedKnown for one	4	Unknown — not stated by the source
Input voltageKnown for one	Unknown — not stated by the source	12 V
Operational conditions3 differ
Operating relative humidity (H-H)Differs	10 - 90%	0 - 95%
Operating temperature (T-T)Differs	-25 - 60 °C	-40 - 65 °C
Storage temperature (T-T)Differs	-25 - 60 °C	-40 - 80 °C
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	0 - 95%
Weight & dimensions4 differ
WidthDiffers	106 mm	184.9 mm
DepthDiffers	94 mm	244.9 mm
HeightDiffers	211 mm	61.2 mm
WeightDiffers	651 g	2.84 kg
Packaging data4 differ
Package widthDiffers	251 mm	146 mm
Package depthDiffers	116 mm	328 mm
Package heightDiffers	119 mm	278 mm
Package weightDiffers	860 g	3.4 kg
Package typeKnown for one	Unknown — not stated by the source	Box
Quantity per packKnown for one	Unknown — not stated by the source	1 pc(s)
Packaging contentidentical
ManualKnown for one	Unknown — not stated by the source	Yes

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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