Hi,
I recently purchased a Tapo C411 battery camera and I’m experiencing a constant repeating noise in both live view and recorded video/audio.

• The issue occurs in a completely quiet room
• It happens in every location I tested
• Firmware is up to date
• Audio settings reset do not help
• Other Tapo cameras I own (Tapo C100 and other wired models) have clean audio

I recorded the sound and analyzed it in Audacity. The spectrogram shows narrow-band, periodic interference around 1.15–1.25 kHz and 1.55–1.56 kHz, repeating continuously. This may suggests internal switching noise leaking into the microphone circuit (likely DC-DC converter or Wi-Fi bursts).

This appears to be a hardware interference issue, not environmental noise.

I would like to know:

1. Is this a known issue with the Tapo C411 and/or C410 battery version?

2. Are there different hardware revisions with improved audio shielding?

3. Should I request a replacement, or is this expected behavior for this model?

4. Is there any planned firmware fix for this internal noise?

I’m attaching:

• An audio sample (.flac)

• A spectrogram screenshot showing the interference pattern

Any support or clarification would be greatly appreciated.
Thank you!