Dahua IPC-HDBW2541R-ZAS-S2 5MP Starlight 5x Zoom IR IP Kamera CCTV IVS Mic SMD+
> Alarm: 1 in, 1 out (Only - ZAS supports); audio: 1 in, 1 out (Only - ZAS supports); supports max. 256 G Micro SD card; built in MIC. > Built-in IR LED, and the max. illumination distance is 40 m.