ARD1731-W2-868-B The black sensor is an advanced wireless PIR-Camera solution that combines motion detection and visual verification thanks to the 2MP CMOS sensor with resolution up to 1600×1200 , ideal for home and professional security. It integrates 2.4GHz RF-HD transmission to send high-definition images in seconds and ensure immediate control of events. Detection is precise thanks to the PIR sensor with coverage up to 12 m and animal immunity up to 18 kg , reducing false alarms. It offers stable communication with two-way technology, AES128 encryption and frequency hopping , with a range of up to 1600 m . It also supports cloud storage with cache up to one week , temperature monitoring and battery life up to 4 years , making it perfect for intelligent alarm systems. Dahua
ARD1731-W2-868-B | PIR DETECTOR WITH BUILT-IN 2MP 1600x1200 CAMERA - 868MHZ BIDIRECTIONAL FREQUENCY - IR 12M

The black Dahua ARD1731-W2-868-B PIR-Camera represents an advanced solution for intelligent security, combining motion detection and visual verification thanks to the 2MP CMOS sensor with resolution up to 1600×1200 for clear images. Thanks to 2.4GHz RF-HD technology, it quickly transmits high-definition snapshots directly to the alarm system and mobile app. Detection is reliable with a PIR sensor up to 12 m and animal immunity up to 18 kg , reducing false alarms. Communication is secure and stable with two-way technology, AES128 encryption and frequency hopping , with a range of up to 1600 m . Includes cloud memory with cache up to one week , temperature monitoring and battery life of up to 4 years , ideal for residential and professional environments.
Main specifications:
- 2MP CMOS sensor with up to 1600×1200 resolution for detailed images
- 2.4GHz RF-HD technology for rapid transmission of high-definition images
- PIR detection up to 12m (86°) with high accuracy
- Animal immunity up to 18 kg to reduce false alarms
- Two-way communication with AES128 and frequency hopping for maximum security
- Wireless range up to 1600 m (RF) and 300 m (RF-HD) in open field
- Cloud storage with cache for up to 1 week for images and videos
- Integrated temperature monitoring for environmental control
- Battery life up to 4 years
Further details
It uses dual transmission with RF 868 MHz and RF-HD 2.4GHz , supported by bidirectional technology , AES128 encryption and frequency hopping , ensuring stable and secure communications with a range of up to 1600 m (RF) and 300 m (RF-HD).
Technical data sheet
| ARD1731-W2-868-B | |
| Video & Audio | |
| Field of View | 88° (H); 68° (V) |
| Image Type | JPEG |
| Resolution | 1600 × 1200; 1280 × 960; 640 × 480; 320 × 240 |
| Frame Rate | 2 |
| Illumination Mode | Infrared Light |
| Illumination Range | 12 m (39.37 ft) |
| Day/Night Switch | Color/Black & White |
| Function | |
| Indicator Light | 1 × green alarm indicator |
| Button | 1 × power switch |
| Remote Update | Cloud update |
| Low Battery Detection | Yes |
| Tamper | Tamper alarm |
| Technical | |
| Detection Mode | PIR |
| Sensitivity | 3 levels adjustable |
| Detection Range | 12 m (39.37 ft) (86°) with installation height of 2.2 m (7.22 ft) |
| Detection Speed | 0.3 m/s–3 m/s (0.98 ft/s–9.84 ft/s) |
| Pet Immunity Level | ≤18 kg (39.68 lb) |
| White Light Resistance Level | 2000 lux |
| Two-way Digital Temperature Compensation | Yes |
| Scenario | Indoor |
| Operating Current | 2 A (Max), 65 uA (Standby) (Battery 3V) |
| Wireless | |
| Carrier Frequency | RF: 868.0 MHz–868.6 MHz RF-HD: 2.4 GHz (Upload images at high speed) 865.340 MHz–866.66 MHz (Upload images at normal speed) |
| 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: Upload images at high speed: Up to 300 m (984.25 ft) in an open space Upload images at normal speed: Up to 1,600 m (5,249.34 ft) in an open space |
| Encryption Mode | AES128 |
| Frequency Hopping | Yes |
| General | |
| Power Supply | CR123A*3 |
| Battery Life | 4 years (if triggered twice a week with a battery efficiency of 70%) |
| Power Consumption | 6 W (Max), 0.2 mW (Standby) |
| Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Operating Humidity | 10%–90% (RH) |
| Product Dimensions | 71.0 mm × 53.2 mm × 127.6 mm (2.80" × 2.09" × 5.02") |
| Net Weight | 202 g (0.45 lb) |
| Gross Weight | 333 g (0.73 lb) |
| Installation | Wall mount |
| Protection | PC + ABS |
| Certifications | THERE IS EN 50131-1:2006 + A1:2009 + A2:2017 + A3:2020 EN 50131-2-2:2021 EN 50131-6:2017 EN 50131-5-3:2017 EN 50130-4:2011 + A1:2014(+) Security Grade 2 Environmental Class II |
| Anti-corrosion Level | Basic Protection |
| Storage Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Storage Humidity | 10%–90% (RH) |
| Packaging Dimensions | 121.0 mm × 65.0 mm × 170.0 mm (4.76" × 2.56" × 6.69") (L × W × H) |
| Wi-Fi | |
| Standard Wi-Fi | 802.11b/g/n |
| Wi-Fi Frequency Range | 2400-2483.5MHz |
| Wi-Fi Power Transmission | CE EIRP: ≤[email protected] FCC output power: ≤[email protected] |


