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Fletch83

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Everything posted by Fletch83

  1. I am wanting to connect a volt free contact to my Hikvision NVR so that when the alarm is set I can trigger the input on the NVR to start alerts etc. I just cannot workout what OP3 is, if volt free I would have expected to see a ground terminal so I can connect to OP3 and ground and then this would act as a switch for the NVR.
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