<p>The <strong>Dahua ARD2251E-W2(868)</strong> is a state-of-the-art <strong>Wireless External Triple-Tech Detector</strong> designed to enhance security through advanced technology. This model supports <strong>anti-masking detection</strong>, which significantly increases alarm reliability by preventing tampering. Additionally, its innovative moving detection feature ensures that any attempts to move or detach the device are promptly detected, making it an essential component of a comprehensive security system.</p><br> <p>One of the standout features of the <strong>Dahua ARD2251E-W2(868)</strong> is its capability for <strong>video verification</strong> when paired with camera modules to form a PIR-Cam, allowing for real-time visual confirmation of alarms. The detector also offers <strong>pet immunity</strong> for animals up to 40kg and 80 cm in height, ensuring that false alarms from pets are minimized, which is particularly advantageous for pet owners. Furthermore, it supports <strong>environment temperature monitoring</strong>, adding another layer of functionality.</p><br> <p>With the incorporation of <strong>two-way communication</strong> and frequency hopping, the device guarantees stable and reliable communication with the alarm hub. The <strong>cloud update</strong> feature enables users to remotely update the device via a mobile app, enhancing usability. The device also has a dual backup system and an auto recovery feature in case an update fails, underscoring Dahua's commitment to ensuring uninterrupted security performance.</p><br>...
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