Update: 

if any user experience similar issue, please start a new thread and attach a video clip of the Alarm sound in the new thread, thank you. 

Hello 

Alarm shouldn't goes off if you set the Alarm OFF for the camera Tapo APP ->below camera  Live view page-> Alarm> toggle it OFF, and it should show ' Alarm off' 

It is recommended to double if you've turned off Alarm in both Home /Away mode.

• Double-check the Home/ Away  settings and see if the Alarm is ON in Home or Away Mode?
• Ensure device firmware & Tapo APP are both up to date
• Please also enable Two-factor authentication for your account 

If still the same, please share a photo of Alarm settings when Alarm goes off and the local time when the Alarm goes off.

Please also share the camera log file here with us, and we'd like to escalate your case. Please let us know the MAC address of Camara via private message. 

How to Get the Log of Tapo Camera

Hi 

Thank you for sharing more case details, please enable Two-factor authentication for your account.

We created a support email TKID220835032 for your case and may escalate your case, please check your email inbox. 

You could share the MAC & log of camera, screenshot of setting through email with us. 

  @kamil_n Glad to know the behavior has stopped based on the conversation on support email. 

From the video you shared, there was a  'Didi, Didi sound',   in my opinion, that seems to be the sound of an Alarm clock (from a real clock) instead of the Camera Alarm sound

You may check if there is any clock in that place and turn off the Alarm on that clock or do you have any clock in the car that will report Alarm at 00:00?