Dahua DH-ARD2251E-W2-V Wireless Outdoor PIR Camera Detector with 40kg Pet Immunity & IP66

Product SKU: DH-ARD2251E-W2-V

Product Overview

The Dahua DH-ARD2251E-W2-V is a wireless outdoor PIR-camera detector designed to provide intrusion detection and visual alarm verification through a compatible Dahua ARC3800H-series alarm hub. Its dual-sensor design combines passive infrared and 24GHz microwave detection across a listed 15-metre, 90° coverage area, while the integrated camera captures JPEG images at up to 1280 × 960. Infrared illumination reaches up to 15 metres for night verification. Pet immunity helps reduce alarms from animals below approximately 80cm and around 40kg when the detector is mounted and configured correctly. Anti-masking, relocation detection, tamper monitoring, adjustable PIR sensitivity and digital temperature compensation improve reliability across changing outdoor conditions. Two-way encrypted wireless communication reaches up to 1,200 metres in open space, while the IP66 housing supports exposed wall or pole installations. This detector is intended for alarm verification and does not provide continuous CCTV video recording.

Key Capabilities

Best For

• Residential Perimeters: Monitors side access paths, rear yards, gates and other outdoor approaches while reducing alarms from suitable household pets.
• Warehouses and Commercial Sites: Provides intrusion detection and image verification around external doors, fenced areas and building approaches.
• Farms and Rural Properties: Protects sheds, equipment areas and controlled access points where long-range wireless communication is beneficial.
• Retail and Office Buildings: Supports after-hours monitoring of external service areas, loading zones and restricted entrances.
• ARC3800H Alarm Systems: Adds outdoor triple-technology detection and visual verification to compatible Dahua alarm installations.

Why Choose the DH-ARD2251E-W2-V

The DH-ARD2251E-W2-V provides more context than a conventional wireless outdoor motion detector by capturing still images when a supported alarm event occurs. Its PIR and microwave detection, anti-masking protection, relocation detection and adjustable sensitivity help improve performance in complex external environments. Pet immunity is useful for properties with medium-to-large animals, while the integrated infrared camera supports night verification without installing a separate camera solely for alarm snapshots. Available through Security Wholesalers, this detector is best used as part of a correctly planned ARC3800H-series alarm system. It is not compatible with the ARC3000H or ARA43 series, and it should not be selected where continuous live video or full CCTV recording is required.

Buyer Decision Tips

Key Features & Technical Specifications

Product Type	Wireless outdoor PIR-camera detector with microwave verification.
Product SKU	DH-ARD2251E-W2-V.
Official Model	DHI-ARD2251E-W2(V).
Compatible Alarm Hubs	Dahua ARC3800H series only; excludes ARC3000H and ARA43 series.
Detection Technology	Passive infrared and 24GHz microwave detection.
Detection Coverage	Up to 15m across a 90° angle when installed at approximately 1m.
Detection Speed	0.3m/s to 2m/s.
Sensitivity	Three adjustable PIR sensitivity levels.
Pet Immunity	Animals below approximately 80cm and around 40kg.
Camera Field of View	110° horizontal and 60° vertical.
Image Format and Resolution	JPEG at 1280 × 960, 640 × 480, 320 × 240 or 160 × 120.
Image Capture Rate	Two frames.
Night Verification	Infrared illumination up to 15m with colour and monochrome operation.
Protection Functions	Anti-masking, movement detection, enclosure tamper alarm and low-battery detection.
Environmental Functions	Environmental temperature monitoring and two-way digital temperature compensation.
Wireless Frequency	433.1MHz to 434.6MHz with transmitter power limited to 10mW EIRP.
Wireless Security	Two-way communication, AES128 encryption and frequency hopping.
Wireless Range	RF up to 1,200m and RF-HD up to 1,000m in open-space conditions.
Power Supply and Battery Life	Four CR123A batteries; listed life up to 3.5 years with the camera and approximately two alarms per week.
Installation and Protection	Wall or pole mounting, 0.8–1.3m installation height, IP66, -25°C to +60°C, 263 × 106 × 94mm and 0.76kg net weight.

Ideal Use Cases

Choosing the Right Model

• Choose this model if: The site uses a compatible ARC3800H alarm hub and requires outdoor intrusion detection with image verification.
• Choose the detector-only model if: Visual alarm snapshots are unnecessary and maximum battery endurance is the main priority.
• Choose a CCTV camera as well if: Continuous recording, live streaming or detailed video investigation is required.
• Use the optional detector bracket if: The installation requires controlled horizontal adjustment rather than direct fixed mounting.
• Reconsider the location if: Large pets can climb near the detector or dense vegetation regularly moves through the coverage area.

FAQs

1. What is the Dahua DH-ARD2251E-W2-V used for?
   The DH-ARD2251E-W2-V is a wireless outdoor PIR-camera detector for compatible Dahua ARC3800H-series alarm hubs. It combines PIR and 24GHz microwave detection with still-image video verification, allowing alarm users to review captured JPEG images after a supported event. It also provides anti-masking, movement tamper detection, temperature monitoring and pet immunity when installed and configured within the specified limits.
2. How far can the detector sense movement?
   The detector provides a listed 90° detection angle and a maximum range of 15 metres when installed at approximately 1 metre above the ground. It is designed to detect movement speeds from 0.3m/s to 2m/s. Actual coverage depends on mounting height, detector angle, surrounding obstacles, temperature, target direction and the selected PIR sensitivity level.
3. What image resolution does the built-in camera provide?
   The camera captures JPEG still images at 1280 × 960, 640 × 480, 320 × 240 or 160 × 120, with a listed capture rate of two frames. Its field of view is 110° horizontally and 60° vertically, and the infrared illumination reaches up to 15 metres for night verification. It is intended for alarm verification rather than continuous CCTV recording.
4. How does the 40kg pet-immunity function work?
   Dahua lists pet immunity for animals below approximately 80cm in height and around 40kg in weight. Correct performance depends on the specified mounting height, detector angle, sensitivity setting and the animal’s distance from the sensor. Pet immunity reduces unwanted alarms but cannot guarantee that every animal movement will be ignored in every environment, particularly if a pet climbs or moves close to the detector.
5. Which alarm hubs are compatible with this detector?
   The camera detector is only compatible with the Dahua ARC3800H series. Dahua specifically excludes the ARC3000H series and ARA43 series from compatibility. The detector uses two-way 433MHz wireless communication, AES128 encryption and frequency hopping, with separate RF and RF-HD communication distances. The exact hub model, regional frequency and firmware should be confirmed before enrolment.
6. How long do the batteries last?
   The detector uses four CR123A batteries. Dahua lists approximately 3.5 years of battery life with the camera fitted when the device triggers about two alarms per week. Battery life is a reference value and can be reduced by frequent alarms, repeated image transmission, weak wireless signal, low temperatures, remote updates and extended use during commissioning. Low-battery detection is built in.
7. Can the DH-ARD2251E-W2-V be installed outdoors?
   Yes. The detector is rated IP66 and operates from -25°C to +60°C at 10%–90% relative humidity. It supports wall or pole mounting and is intended for installation between 0.8m and 1.3m above the ground. The product has basic anti-corrosion protection, so coastal, chemical or highly corrosive sites may require additional assessment and suitable mounting practices.
8. What should I confirm before ordering this wireless PIR-camera detector?
   Confirm the ARC3800H-series hub model, 433MHz regional compatibility, proposed mounting height, detection zone, pet activity, required image-verification range and wireless signal path before ordering. The detector should not be used as a substitute for continuous CCTV recording. Security Wholesalers can review the alarm hub and intended outdoor location to identify compatibility, coverage or installation limitations before deployment.

Additional Information

Dahua DH-ARD2251E-W2(V) Datasheet