Best for Siren loudness (if built-in)
Arlo Doorbell 2K (2nd Gen), AVD4001
4.4 feature score
Highest scored product for this feature based on supporting review evidence.
Best Arlo Home Security & Surveillance for Siren loudness (if built-in)
Siren loudness (if built-in) Decision Dashboard
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The built-in siren was treated as a useful and loud security extra in the reviews that discussed it.
Pros: Phone call integration, System completeness
Cons: Recording, Subscription