Applies to: DH81NK/DH41NK/DM21O/DM31O/DL81A/DH81S/DH81NG/DN81NB/DM41G/DN41CJ/DN81BJ/DN61EC/DG81W/DG61X/DG41T/DT81DQ/DT41DC/DT61ER/N43SU/N44SU
If the monitor or TV keeps popping up a window like the picture below. 
That window is to remind you there is alarm detection.
Please go to alarm to untick the option "show message" in every channel.
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