Dahua PIR Outdoor Camera Detector ARD2251E-W2

• Support anti-masking detection
• Support moving detection to prevent someone move or detach device
• Support the installation of camera modules to form PIR-Cam to implement video verification
• Pet immunity: up to 80 cm, 40kg
• Support environment temperature monitoring
• Supports two-way communication and frequency hopping to make communication with alarm hub stable and reliable
• Features cloud update. You can also remotely update the device on the mobile app 
• Offers a dual backup system, and uses auto recovery when an update fails
•  Suitable for the ARC3800H series only, excluding the ARC3000H series and ARA43 series.

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, the installation height is 1 m
• Detection Speed : 0.3 m/s–2 m/s
• Microwave Frequency : 24 G
• Pet Immunity Level : <80 cm, about 40 kg
• 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 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 
• Operating Humidity : 10%–90% (RH)
• Product Dimensions : 211 mm × 106 mm × 94 mm 
• Installation Height : 0.8 to 1.3 m
• Net Weight : 651 g
• Gross Weight : 890 g 
• Installation : Wall mount, pole mount
• Casing Material : PC + GF
• Protection : IP66
• Certifications : CE
• Anti-corrosion Level : Basic Protection
• Storage Temperature : –25 °C to +60 °C 
• Packaging Dimensions : 251 mm × 116 mm × 119 mm