If you are using the DMSS version is newer than 1.99.710 (Build date is 2024.04.17)
And when you added the IP camera under the DMSS account.
You can follow the steps below to disable the warning light and audio.
Step 1 Click device details.
Step 2 Click Siren Alarm Setting
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Step 3 Click More.
Step 4 Click White Light.