Dahua DH-ARD2251E-W2, Wireless External Triple-Tech Detector

Key Features Triple-technology motion detection (PIR Microwave intelligent algorithm) Outdoor-rated design for perimeter and approach protection Pet-immune detection to reduce false alarms Anti-masking detection for enhanced security Tamper protection against removal or interference Optional camera module support for video verification Built-in temperature monitoring Two-way encrypted wireless communication Remote configuration and firmware updates via alarm hub Designed for Dahua 868 MHz wireless alarm systems Technical Specifications Detection Type: Triple-tech (PIR Microwave algorithm processing) Detection Distance: Up to 15 m Detection Angle: Wide-angle coverage Pet Immunity: Supports pet-friendly environments Wireless Frequency: 868 MHz Encryption: Secure wireless communication Communication Range: Long-range wireless (open-space conditions) Power Supply: Battery powered Battery Type: CR123A lithium batteries Operating Temperature: Suitable for outdoor environments Ingress Protection: IP66 weather-resistant housing Mounting Height: Approximately 0.8 m – 1.3 m recommended Compatible Systems Dahua wireless alarm hubs supporting 868 MHz detectors Dahua AirShield wireless alarm ecosystem Optional Dahua PIR-Cam video verification modules Typical Applications Residential perimeter protection Driveways and yards Commercial building approaches Outdoor areas requiring pet-immune detection Sites needing reduced false alarm rates Installer Notes Install away from direct sunlight, reflective surfaces, and moving vegetation Ensure correct mounting height for optimal pet immunity performance Perform walk testing after installation to fine-tune detection zones Best results achieved when paired with Dahua wireless alarm hubs and sirens SKU: DH-​ARD22‌51E-​W2 Categories: Dahua, Dahua Airshield Wireless Alarms Tags: dahua alarms, dahua Wireless PIR-Camera, Wireless PIR-Camera