Dahua Wireless Outdoor Triple-Tech Motion Detector – 868MHz, PIR + Microwave & Pet Immunity (DHI-ARD2251E-W2-868)

Reinforce your outdoor perimeter with zero compromises using the Dahua Wireless Outdoor Triple-Tech Motion Detector (DHI-ARD2251E-W2-868)! Specifically engineered for harsh open-air environments, this heavy-duty commercial sensor combines dual Passive Infrared (PIR) heat sensing with 24GHz microwave Doppler radar. By requiring all sensing elements to confirm motion simultaneously, it delivers uncompromising detection accuracy while effectively filtering out false triggers caused by weather, swaying foliage, or roaming animals. 🏡🌧️

🌟 Key Features

• 🛡️ Triple-Technology Sensing (Dual PIR + Microwave): Merges two independent PIR thermal sensors with 24GHz microwave radar to virtually eliminate environmental false alarms.

• 🐾 Advanced Outdoor Pet Immunity: Intelligent digital processing algorithms ignore outdoor pets and stray animals up to 80 cm in height (approx. 40 kg).

• 🛡️ Active IR Anti-Masking: Detects deliberate tampering, spray paint, or physical blocking of the detector lens and alerts your alarm hub instantly.

• 🌧️ IP65 Weatherproof & UV Protected: Weather-sealed, heavy-duty housing equipped with a protective top hood to resist heavy rain, dust, and direct sunlight glare.

• 📡 868MHz Secure Two-Way Communication: Long-range RF signal transmission up to 1,600 meters in open area with AES-128 encryption and anti-jamming frequency hopping.

• 🔋 Up to 5-Year Battery Life: High-efficiency power management operates on replaceable CR123A batteries for long-lasting, low-maintenance performance.

• 📲 Full DMSS App Integration: Remote sensitivity adjustments, battery health monitoring, signal strength testing, and push notifications directly on your phone.

💡 Why You Should Buy This Product

• 🚫 Ultimate Outdoor False Alarm Immunity: Standard outdoor PIRs struggle with wind and sunlight; triple-tech technology ensures you only get alerted for actual human threats.

• 🔌 100% Wire-Free Perimeter Defense: Battery-powered wireless design eliminates costly trenching and wiring work across outdoor yards.

• ⚡ Pre-Intrusion Detection: Stops threats at the fence or driveway before intruders ever reach doors, windows, or building interiors.

🎯 Best For

• 🏠 Residential Estates & Villas: Securing open backyards, swimming pool perimeters, driveways, and side passageways.

• 🏬 Commercial Warehouses & Storage Yards: Protecting outdoor inventory bays, equipment staging areas, and loading docks.

• 🏢 Industrial Parks & Remote Sites: Long-range boundary protection along fence lines, parking lots, and utility enclosures.

⚙️ Technical Specifications

• 🏷️ Brand: Dahua

• 🆔 Model Code: DHI-ARD2251E-W2-868

• 📷 Product Type: Wireless Outdoor Dual-Tech / Triple-Sensing Motion Detector

• 📻 Carrier Frequency: 868.0 MHz – 868.6 MHz

• 🔐 Wireless Encryption: AES-128 Encryption

• 🎯 Detection Range & Angle: 12 meters (39 ft) at 90° wide coverage

• 🐾 Pet Immunity: Up to 80 cm target height (~40 kg)

• 🛡️ Protective Rating: IP65 Weatherproof (Outdoor rated)

• 📡 Transmission Range: Up to 1,600 meters (open area)

• 🔋 Power Source: 2× CR123A Lithium Batteries (Up to 5-year battery life)

• 📏 Dimensions: 160.0 mm × 72.0 mm × 65.0 mm

• 🛠️ Installation Method: Wall Mount (Recommended height: 0.8 m to 1.2 m)