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    Dahua NVR 52xx-4KS2 (Version 1) and AlarmBox ARB1606

    Hi, i bought an used Dahua NVR 5208-4KS2 (V1) with an old Firmware installed "NVR5XXX-4KS2_MultiLang_V3.216.0000005.0.R.20190125" As the AlarmBoxes were not offered in the alarm settings i upgraded to "NVR5XXX-4KS2_MultiLang_V4.000.0000001.5.R.20191218" Everything workes fine, but no alarmboxes...
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    Hi, i'm DAHUA 52xx-4KS2 user (non professional, just for securing my home)

    Hi, i'm interested i securing my flat. After buy and try with some cheap and easy DVR / NVR i bought DAHUA 5216-4KS2 (V1?). I added an DAHUA ARB1606 (AlarmBox). First it worked fine but due to some loose contacts during installation i destroyed the RS485 input chip? from the NVR, the alarm box...
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