dahua ARD821-W2 Wireless Panic Button User Guide
This user manual provides instructions for installing and using the Dahua ARD821-W2 Wireless Panic Button, also known as the ARD821W2 or SVN-ARD821-W2. Ensure compatibility with the DMSS app and hub before installation. The manual includes important safeguards and warnings. For more information, scan the QR code on the package or visit the official website.