Dahua ARD1731-W2 Wireless Alarm PIR & Camera Detector

Dahua ARD1731-W2 Wireless PIR Camera Detector

The Dahua ARD1731-W2 Wireless Alarm PIR and Camera Detector combines indoor motion detection with high-resolution alarm snapshots for compatible Dahua AirShield systems. When an intrusion event occurs, the built-in camera captures JPEG images that can help users and monitoring personnel understand what triggered the alarm.

The PIR detector covers up to 12 metres at an 86° angle when installed at the recommended height of 2.2 metres. Infrared illumination provides image capture in low-light conditions, while pet immunity and adjustable sensitivity support reliable use in residential and commercial properties.

Key Features

• Motion detection with image verification: Captures alarm snapshots when an intrusion event is detected.
• High-resolution JPEG images: Supports resolutions up to 1600 × 1200 pixels.
• Infrared illumination: Provides up to 12 metres of illumination for low-light alarm images.
• 12-metre PIR coverage: Delivers an 86° detection field when installed at the recommended 2.2-metre height.
• Pet immunity: Helps reduce unwanted alarms caused by pets weighing up to 18 kg.
• Three sensitivity levels: Allows the PIR response to be adjusted for the room and installation conditions.
• Digital temperature compensation: Helps maintain dependable detection as indoor temperatures change.
• Privacy-focused operation: The camera is designed to capture snapshots when an intrusion event occurs rather than provide continuous surveillance.
• Secure wireless communication: AES128 encryption, two-way communication and frequency hopping help protect the connection.
• System alerts and updates: Supports low-battery warnings, tamper alarms and cloud-based firmware updates.

Visual Alarm Verification

A standard PIR detector reports motion, while the ARD1731-W2 adds images from the protected area when an alarm is triggered. These snapshots can provide useful context before a response is arranged, helping users distinguish a possible intrusion from an environmental or household event.

The detector supports colour images during suitable lighting conditions and black-and-white images when infrared illumination is required. Available image resolutions include 1600 × 1200, 1280 × 960, 640 × 480 and 320 × 240 pixels.

Choosing the Right Dahua Detector

For general indoor motion detection without image capture, the ARD1233-W2 standard PIR detector provides a cost-effective option. Where stronger resistance to environmental interference is preferred, the ARD2231-W2 dual-tech detector combines PIR and microwave sensing.

Explore our full range of Dahua wireless alarm motion detectors to compare standard, dual-technology and camera-equipped models.

Compatibility and Installation

The ARD1731-W2 requires a compatible Dahua AirShield hub that supports PIR-camera devices and alarm-image transmission. The hub model and wireless frequency should be confirmed before ordering because Dahua produces regional frequency variants.

Correct mounting height and detector positioning are important for both motion coverage and useful alarm images. Avoid mounting the unit where furniture, curtains or other obstructions may block the detection area or camera view. Additional sirens, contacts, keypads and alarm devices are available from our Dahua wireless alarm accessories collection.

Technical Specifications

• Model: DHI-ARD1731-W2
• Detection mode: PIR with integrated camera
• Detection range: Up to 12 m at 86°
• Recommended installation height: 2.2 m
• Detection speed: 0.3–3 m/s
• Pet immunity: Up to 18 kg
• Sensitivity: Three adjustable levels
• White-light resistance: 2,000 lux
• Image format: JPEG
• Maximum image resolution: 1600 × 1200
• Other resolutions: 1280 × 960, 640 × 480 and 320 × 240
• Camera field of view: 88° horizontal and 68° vertical
• Illumination: Infrared, up to 12 m
• Day/night operation: Colour and black-and-white
• Wireless frequency: 433.1–434.6 MHz RF; 2.4 GHz RF-HD for high-speed image transfer
• Communication distance: RF up to 1,200 m in open conditions; high-speed image transfer up to 300 m in open conditions
• Communication: Two-way with frequency hopping
• Encryption: AES128
• Power supply: 3 × CR123A batteries
• Battery life: Up to four years under stated operating conditions
• Operating temperature: –10°C to +55°C
• Operating humidity: 10%–90% RH
• Dimensions: 71 × 53.2 × 127.6 mm
• Net weight: 202 g
• Installation: Indoor wall mount
• Casing: PC + ABS