Product comparison · 2 motion detectors

Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White vs Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR

9specifications compared
8differ
1identical
34known for one product only

Key differences

The Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR has 20° more detection angle than the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White (110° vs 90°). The Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White has 2 more batteries supported than the Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR (4 vs 2). Mounting type: Wall on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, Ceiling on the Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR. Product colour: White on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, Blue, White on the Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR. Operating frequency: 433.1 - 434.6 MHz on the Dahua Technology DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White, 433.92 MHz on the Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR.

Mounting type
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:Wall
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:Ceiling
Product colour
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:White
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:Blue, White
Detection angle
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:90°
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:110°
Operating frequency
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:433.1 - 434.6 MHz
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:433.92 MHz
Battery type
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:CR123A
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:AAA
Number of batteries supported
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:4
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:2
Operating temperature (T-T)
- DHI-ARD2251E-W2 motion detector Passive infrared (PIR) sensor/Microwave sensor Wireless Wall White:-25 - 60 °C
- PIR Motion Sensor Wireless 150m I-BELL-RING-PIR:-20 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of DHI-ARD2251E-W2, I-BELL-RING-PIR
43 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 Techly PIR Motion Sensor Wireless 150m I-BELL-RING-PIR Model I-BELL-RING-PIR View product
Features3 differ
Mounting typeDiffers	Wall	Ceiling
PlacementKnown for one	Indoor, Outdoor	Unknown — not stated by the source
LED indicatorsKnown for one	Alarm	Unknown — not stated by the source
Product colourDiffers	White	Blue, White
Security algorithmsKnown for one	128-bit AES	Unknown — not stated by the source
Detection angleDiffers	90°	110°
Housing materialKnown for one	Polycarbonate (PC)	Unknown — not stated by the source
International Protection (IP) codeKnown for one	IP66	Unknown — not stated by the source
LED colourKnown for one	Green	Unknown — not stated by the source
Angle of rotationKnown for one	Unknown — not stated by the source	360°
Number of melodiesKnown for one	Unknown — not stated by the source	52
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
CertificationKnown for one	Unknown — not stated by the source	EC, FCC, RoHS, WEEE
Security2 differ
Sensor typeDiffers	Passive infrared (PIR) sensor/Microwave sensor	Passive infrared (PIR) sensor
Transmit powerKnown for one	10 dBmW	Unknown — not stated by the source
Alarm functionKnown for one	Yes	Unknown — not stated by the source
Detection distanceKnown for one	15 m	Unknown — not stated by the source
InterfaceKnown for one	RF	Unknown — not stated by the source
Operating frequencyDiffers	433.1 - 434.6 MHz	433.92 MHz
Transmission distanceKnown for one	1200 m	Unknown — not stated by the source
Volume (max)Known for one	Unknown — not stated by the source	110 dB
Volume (min)Known for one	Unknown — not stated by the source	25 dB
Power2 differ
Power source typeKnown for one	Battery	Unknown — not stated by the source
Battery typeDiffers	CR123A	AAA
Number of batteries supportedDiffers	4	2
Power consumption (typical)Known for one	Unknown — not stated by the source	0.015 W
Operational conditions1 differ
Operating relative humidity (H-H)Known for one	10 - 90%	Unknown — not stated by the source
Operating temperature (T-T)Differs	-25 - 60 °C	-20 - 60 °C
Storage temperature (T-T)Known for one	-25 - 60 °C	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	106 mm	Unknown — not stated by the source
DepthKnown for one	94 mm	Unknown — not stated by the source
HeightKnown for one	211 mm	Unknown — not stated by the source
WeightKnown for one	651 g	Unknown — not stated by the source
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
Batteryidentical
Battery technologyKnown for one	Unknown — not stated by the source	Alkaline
Other featuresidentical
Maximum rangeKnown for one	Unknown — not stated by the source	150 m
Packaging contentidentical
Batteries includedKnown for one	Unknown — not stated by the source	Yes
ManualKnown for one	Unknown — not stated by the source	Yes
Screws includedKnown 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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