The siren of the "Hub" for no reason sounds every time at 5:12 AM, Why?

A few days ago I purchased a “Home Security Monitor” I configured it to
“Test mode” to train my family with the system. The siren of the “Hub” for no reason sounds every time at 5:12 AM, no matter if the system is active or not the siren always go off at 5:12 AM for no reason. Why?

Sounds like something in setting