https://community.arlo.com/t5/Arlo/Loudest-siren/m-p/2417269#M96472 <P>You could get another 4000 base for the second floor as a siren extension.&nbsp;</P><P>&nbsp;</P><P>The newer base/hubs do not have internal sirens as they were moved to be in the newer cameras.</P> Mon, 09 Sep 2024 09:18:18 GMT DannyBearAgain 2024-09-09T09:18:18Z https://community.arlo.com/t5/Arlo/Loudest-siren/m-p/2417261#M96469 <P>Which siren is the loudest? I heard the first gen sirens and they were much louder than pro 2 base stations. Not sure about the new ultra base stations. I want to be able to hear the siren from the second floor.</P> Mon, 09 Sep 2024 05:12:44 GMT https://community.arlo.com/t5/Arlo/Loudest-siren/m-p/2417261#M96469 ugadd 2024-09-09T05:12:44Z https://community.arlo.com/t5/Arlo/Loudest-siren/m-p/2417269#M96472 <P>You could get another 4000 base for the second floor as a siren extension.&nbsp;</P><P>&nbsp;</P><P>The newer base/hubs do not have internal sirens as they were moved to be in the newer cameras.</P> Mon, 09 Sep 2024 09:18:18 GMT https://community.arlo.com/t5/Arlo/Loudest-siren/m-p/2417269#M96472 DannyBearAgain 2024-09-09T09:18:18Z