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Dahua DH-ARD2251E-W2, Wireless External Triple-Tech DetectorModel: DH ARD2251E W2 Who This Is For For alarm installers and security integrators who need outdoor perimeter detection with built in visual verification, the Dahua DH ARD2251E W2 is a wireless external triple tech detector designed for sites where false alarms are a serious operational problem. Triple tech detection combines PIR sensing with microwave and camera based verification, meaning an alert is only triggered when multiple detection methods

wall/ceiling/junction box mount compatible

Audio is captured and recorded to the NVR alongside video

providing crucial data for environments where monitoring heat signatures is vital

but live talk-down capability would require an external speaker or a different camera model with a confirmed built-in speaker

Smart Event Management:

"name": "How does WizMind AI detection work across a 360-degree field

warm light switches off and IR resumes - up to 30 m on both modes

or needs higher channel counts - an NVR from the Hikvision NVR range will better suit those requirements

RJ45 10/100 Base-TX Ethernet

The AE-MN5043(RJ45) does a specific job well: it consolidates 4-channel IP camera recording

focus speed

Every camera connects directly to the NVR via a single Cat5e or Cat6 cable carrying both power and data