Product comparison · 2 motion detectors

Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White vs Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White

21specifications compared
19differ
2identical
15known for one product only

Key differences

The Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White has 54° more detection angle than the Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White (90° vs 36°). The Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White has 10 dBmW more transmit power than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (20 dBmW vs 10 dBmW). The Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White has 105 m more detection distance than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (120 m vs 15 m). Mounting type: Ceiling/wall on the Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White, Wall on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White. International Protection (IP) code: IP67 on the Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White, IP66 on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White.

Mounting type
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:Ceiling/wall
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wall
Detection angle
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:36°
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:90°
International Protection (IP) code
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:IP67
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:IP66
Connectivity technology
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:Wired
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wireless
Transmit power
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:20 dBmW
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:10 dBmW
Detection distance
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:120 m
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:15 m
Operating frequency
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:24000 MHz
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:433.1 - 434.6 MHz
Power source type
- DH-PFR4K-E120 motion detector Wired Ceiling/wall White:AC, DC
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Battery

Side by side

Differences highlightedShow differences only

Comparison of DH-PFR4K-E120, DHI-ARD2251E-W2
36 specifications	A Dahua Technology DH-PFR4K-E120 motion detector Wired Ceiling/wall White Model DH-PFR4K-E120 View product	B Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White Model DHI-ARD2251E-W2 View product
Features3 differ
Mounting typeDiffers	Ceiling/wall	Wall
LED indicatorsKnown for one	Unknown — not stated by the source	Alarm
Security algorithmsKnown for one	Unknown — not stated by the source	128-bit AES
Detection angleDiffers	36°	90°
Housing materialKnown for one	Unknown — not stated by the source	Polycarbonate (PC)
International Protection (IP) codeDiffers	IP67	IP66
LED colourKnown for one	Unknown — not stated by the source	Green
Security4 differ
Sensor typeKnown for one	Unknown — not stated by the source	Passive infrared (PIR) sensor/Microwave sensor
Connectivity technologyDiffers	Wired	Wireless
Transmit powerDiffers	20 dBmW	10 dBmW
Alarm functionKnown for one	Unknown — not stated by the source	Yes
Detection distanceDiffers	120 m	15 m
InterfaceKnown for one	Unknown — not stated by the source	RF
Operating frequencyDiffers	24000 MHz	433.1 - 434.6 MHz
Transmission distanceKnown for one	Unknown — not stated by the source	1200 m
Power1 differ
Power source typeDiffers	AC, DC	Battery
Battery typeKnown for one	Unknown — not stated by the source	CR123A
Number of batteries supportedKnown for one	Unknown — not stated by the source	4
Input voltageKnown for one	12 V	Unknown — not stated by the source
Power consumption (standby)Known for one	12 W	Unknown — not stated by the source
Power consumption (typical)Known for one	14 W	Unknown — not stated by the source
Operational conditions3 differ
Operating relative humidity (H-H)Differs	0 - 95%	10 - 90%
Operating temperature (T-T)Differs	-40 - 70 °C	-25 - 60 °C
Storage temperature (T-T)Differs	-40 - 80 °C	-25 - 60 °C
Storage relative humidity (H-H)Known for one	0 - 95%	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	157.9 mm	106 mm
DepthDiffers	67.1 mm	94 mm
HeightDiffers	204.9 mm	211 mm
WeightDiffers	1.7 kg	651 g
Packaging data4 differ
Package widthDiffers	171 mm	251 mm
Package depthDiffers	208 mm	116 mm
Package heightDiffers	256 mm	119 mm
Package weightDiffers	2.2 kg	860 g
Quantity per packKnown for one	1 pc(s)	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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