A: Yes (VTO series). However, doorbells usually have a physical reset button that does erase the password. Check the pinhole near the SD card slot first.
If you cannot obtain a valid serial number reset code (e.g., you bought a used camera on eBay with no invoice), your only option is a dahua password reset by serial number
After successful verification, you will be able to immediately enter and confirm a new password without waiting for a code from support. A: Yes (VTO series)
Modern Dahua devices do not use universal default passwords like "admin" or "888888" for security reasons. Instead, they use a dynamic cryptographic challenge-response system. A: Yes (VTO series). However