SimpliSafe 105dB Auxiliary Siren - Compatible with Gen 3 Home Security System

Very loud have it mounted outside so my neighbors can hear when my simplisafe alarm goes off

Loud! Easy to connect to system and a no brainer for your home.

Loud! Easy connect!

I have 6 of these sirens. Three inside and three outside of my home. Sufficient, I believe. One of them just died for no apparent reason after three years. So I will be replacing it immediately. When operating a Simplisafe system in a very large home, there are challenges in terms of all sensors reaching the base station. It will require some effort and take some time to get it right, or else you'll be getting some false alarms or non-connection alarms at inconvenient times. Overall we have been very satisfied with our system. The sirens are quite loud, which is a good thing.

The Simplisafe support page says how to test this:=========- Place System Into Test Mode- ... press the button on the top of the Extra Siren. You’ll hear the Base Station announce, “Siren” to confirm the test was successful.NOTE: The Extra Siren will also emit a loud beep during this test. Please be sure to protect your ears, as the Extra Siren is equipped with a 105dB siren.=========To me, that implies that the siren will beep as loud as the siren alert sound. But it doesn't.To actually test the siren's alarm sound, I had to call their customer support people who armed the system in practice mode and then had me trigger an alarm. Then the siren sounded fully (and very loudly).

Good and loud, some have short battery life and connectivity issues, other last over a year on 1 battery.

Very loud! Connected easy. Good

Works As it should And Is of course 100 compatible