Regular sound alarm on CCR1009-8G-1S-1S +

Hardware MikroTik hardware general
1

Good morning.
There CCR1009-8G-1S-1S +. From time to time during operation emits a series of sounds of different tone. Often times a day, sometimes several times.
A few days can work without these sounds. Includes full logging on the third-party server at the time of buzzer anything suspicious in the logs there (apart from the usual errors ovpn).
The System Health is also nothing unusual temperature readings: Temperature 35C, CPU temperature 53C.
No scripts with alarm.
At work, these sounds have no effect.
OS Version - 6.35, firmware version 3.27.

What could be causing these regular sounds?

2

Is the CCR always rebooting? Does it beep once just like when it is booting? I find some of the features in routerOS are buggy that when you use them it causes a reboot. Are you using a script that creates beeps? Are you using the alarm alert feature on routerOS?

3

CCR not reboot. At work, these sounds have no effect.
I don’t use scripts with beep.
I don’t use alarms.