The DHI-ARD1731-W2 is a wireless indoor PIR camera that captures and transmits images upon intrusion detection. It integrates motion sensing with image capture, allowing for real-time visual verification via app or monitoring center. With pet immunity, temperature monitoring, and encrypted communication, it's ideal for secure, efficient indoor surveillance where privacy and quick threat assessment matter.
Key Features
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Visual Intrusion Verification - Captures high-resolution snapshots (up to 1600×1200) during motion detection for clear incident confirmation.
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RF-HD Image Transmission - Transmits up to 6 HD images in under 10 seconds using secure 2.4GHz RF-HD technology.
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Pet Immunity Up to 18kg - Designed to ignore pets under 18 kg, reducing false alerts in homes or offices with animals.
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Infrared Illumination - Provides visibility in complete darkness up to 12 meters, ensuring round-the-clock monitoring.
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Temperature Monitoring - Built-in temperature sensor adds environmental awareness and supports system integration.
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Dual-Frequency Wireless with Frequency Hopping - Uses both RF (433MHz) and RF-HD (2.4GHz) bands for stable communication, with interference avoidance.
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Cloud-Based Update with Auto-Recovery - Supports over-the-air firmware updates and auto-recovery if updates fail.
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Long Battery Life - Runs on three CR123A batteries, lasting up to 4 years under typical usage conditions.
Perfect For:
- Home living rooms and hallways
- Office entrances and meeting rooms
- Apartment main doors or corridors
- Small business interiors
- Storage areas or IT rooms
- Vacation homes or rental units
Install Tips
- Mount at 2.2 m height for optimal PIR coverage and camera angle.
- Aim the sensor to face common entry points like doors or windows.
- Avoid placing near vents or direct sunlight to prevent PIR interference.
- Use the RF-HD signal test function during install to confirm connectivity range.
- Ensure battery tabs are removed fully before setup — and check signal strength in DMSS app.
- Consider disabling image upload temporarily during battery replacements or maintenance.
Downloads
Quick-Read Specs Card
| Spec |
Detail |
| Resolution |
Max. 1600 × 1200 (JPEG) |
| Field of View |
88° (H), 68° (V) |
| Night Vision |
IR up to 12 m (39.4 ft) |
| Image Transmission |
RF-HD, sends 6 images in ~10s |
| Detection Type |
PIR (86° @ 12 m) |
| Pet Immunity |
≤18 kg (39.7 lb) |
| Temperature Monitoring |
Yes |
| Wireless Range |
RF: 1,200 m, RF-HD: 300 m (open space) |
| Encryption |
AES128, two-way communication |
| Power Supply |
3 × CR123A |
| Battery Life |
Up to 4 years (low trigger frequency) |
| Install Type |
Wall mount |
| Dimensions |
127.6 × 71.0 × 53.2 mm |
| Weight |
202 g (net) |
| Environment |
Indoor, -10 °C to +55 °C |
Extra Info
Snapshot Verification via RF-HD
When motion is detected, the device transmits up to six high-quality images using RF-HD (2.4 GHz) protocol, enabling fast visual confirmation by users or monitoring stations. This greatly improves alarm credibility and response efficiency.
Pet-Friendly PIR Detection
Ideal for households and office spaces with pets, this unit intelligently distinguishes between human and animal movement, reducing false alarms from cats or small dogs.
Infrared Night Imaging
With IR illumination up to 12 meters, the camera captures events in total darkness — ensuring continuous surveillance during nighttime or power failures.
Dual Wireless Communication
While image data uses 2.4 GHz RF-HD, standard alarm signals operate on 433 MHz RF. The dual-band setup offers redundancy and stability, supported by automatic frequency hopping to mitigate interference.
Battery & Power Efficiency
Three CR123A batteries deliver long-term performance, with an estimated 4-year lifespan under light usage (e.g., two triggers per week). Battery status and low-power alerts are visible in the system app.
Privacy-First Design
The camera only activates during verified intrusion events, minimizing unnecessary image capture and respecting user privacy in private spaces.
Q&A
Q: Does this record video or just images?
It captures a series of high-resolution JPEG snapshots (up to 6) when triggered — not continuous video.
Q: Is it suitable for outdoor use?
No. This model is rated for indoor use only and is not weatherproof.
Q: How far can it detect motion?
It can detect movement up to 12 meters (39.4 ft) within an 86° horizontal angle when installed at 2.2 m height.
Q: Can I use this with pets at home?
Yes. It has pet immunity up to 18 kg (40 lbs), so small dogs and cats won’t trigger alarms.
Q: How are images delivered to me?
Images are sent to the alarm hub and then pushed to your mobile app (DMSS) or monitoring station for review.
Q: Can it still function if Wi-Fi is down?
Yes. It uses dedicated RF protocols to communicate with the hub. However, cloud delivery of images requires an internet connection.
Q: How long does the battery last?
Up to 4 years, assuming low trigger frequency and 70% battery efficiency. Usage and configuration will affect actual lifespan.
Q: Is image transfer encrypted?
Yes. It uses AES128 encryption and two-way communication for secure data transmission.
