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How-to: - How do I set up an alarm to work with an external device on my Hikvision NVR? | IP CCTV Forum for IP Video, network cameras & CCTV software
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How-to: - How do I set up an alarm to work with an external device on my Hikvision NVR? | IP CCTV Forum for IP Video, network cameras & CCTV software
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