Dahua DH-IPC-HDW2431TP-ZS-27135-S2 - Installing Device; Installation Type; Installing SD Card (Optional); Attaching Device

Quick Start Guide
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Installing Device 3.3
3.3.1 Installation Type
3.3.2 Installing SD Card (Optional)
 Pull the power plug off before installing or removing the SD card.
 Press and hold the RESET button for 10 s to reset the camera.
3.3.3 Attaching Device