> 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. We are Dahua authorized distributor in China and Hikvision authorized distributor globally, so our prices are very competitive compared with our competitors, and after-sales service is better supported by manufacturer.
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