> Alarm: 1 in, 1 out ; audio: 1 in, 1 out ; Supports max. 256 G Micro SD card; built in MIC. > Built-in IR LED, and the max. illumination distance is 80 m. > SMD Plus. > Abnormality detection: Motion detection, video tampering, audio detection, no SD card, SD card full, SD card error, network disconnection.
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