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2026-04-01

Dahua Technology Honored by WWF-Hong Kong as 'Smart Technology Partner' at Earth Hour 2026 Ceremony

ARD2251E-W2(868V)

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ARD2251E-W2(868V)

Dahua Wireless External PIR-Camera (Only compatible with ARC3800H series)

Key Points
    · Anti-masking detection
    · Ingress Protection: IP66
    · Resolution: 1280*960, 640*480, 320*240, 160*120
    · Implements moving detection to prevent someone move or detach device
    · Pet immunity: up to 80 cm, 40 kg
    · Provides a dual backup system, and uses auto recovery when an update fails
    · Enables monitoring of environmental temperatures
    · Features cloud update,allowing convenient remote updates via the mobile app
Sales Enquiry
Datasheet

Specifications

Video & Audio

Field of View

110° (H); 60° (V)

Image Type

JPEG

Resolution

1280 × 960; 640 × 480; 320 × 240; 160 ×120

Frame Rate

2

Illumination Mode

Infrared Light

Illumination Range

15 m (49.21 ft)

Day/Night Switch

Color; Black and White

Function

Indicator Light

1 × green alarm indicator

Button

1 × power switch
1 × detection range adjustment switch

Remote Update

Cloud update

Low Battery Detection

Yes

Tamper

Tamper alarm

Moving detection

Yes

Technical

Detection Mode

PIR + Microwave

Sensitivity

PIR:3 levels adjustable

Detection Range

Angle:90°
Range:15 m (49.21 ft), the installation height is 1 m (3.28 ft)

Detection Speed

0.3 m/s–2 m/s

Microwave Frequency

24 G

Pet Immunity Level

<80 cm (2.62 ft), about 40 kg (88.19 lb)

White Light Resistance Level

10,000 lux

Anti-masking

Yes

Two-way Digital Temperature Compensation

Yes

Scenario

Outdoor, indoor

Operating Current

20 uA

Alarm Current

Without Camera: 26mA (Avg); 250 mA (Max)
With Camera in Night: 380 mA (Avg); 1.5 A (Max)

Wireless

Carrier Frequency

868.0 MHz–868.6 MHz

Transmitter Power (EIRP)

Limit 25 mW

Communication Mechanism

Two-way

Communication Distance

RF: Up to 1,600 m (5,249.34 ft) in an open space
RF-HD: Up to 1,400 m (4593.18 ft) in an open space

Encryption Mode

AES128

Frequency Hopping

Yes

General

Power Supply

CR123A × 4

Battery Life

Without Camera: 5 years (triggers 10 alarms a day)
With Camera: 3.5 years (triggers alarms twice a week)

Operating Temperature

–25 °C to +60 °C (–13 °F to +140 °F)

Operating Humidity

10%–90% (RH)

Product Dimensions

263 mm × 106 mm × 94 mm (10.35" × 4.17" × 3.70”)

Installation Height

0.8 to 1.3 m

Net Weight

763 g (1.68 lb)

Gross Weight

1.06 kg (2.34 lb)

Installation

Wall mount, pole mount

Casing Material

PC + GF

Protection

IP66

Certifications

CE

EN 50131-1:2006+A1:2009+A2:2017+A3:2020

EN 50131-6:2017+A1:2021

EN 50131-5-3:2017

EN 50131-2-4:2020

Security Grade 2

Environmental Class IV

Anti-corrosion Level

Basic Protection

Storage Temperature

–25 °C to +60 °C (–13 °F to +140 °F)

Storage Humidity

10%–90% (RH)

Packaging Dimensions

297 mm × 146 mm × 120 mm (11.69" × 5.75” × 4.72”)

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