Most Dahua cameras (excluding some dome models) have a hidden reset button. You will need a paperclip or a small screwdriver.
Dahua’s free (v5.0 or newer) can reset a camera if you have the security code or have previously set up a recovery email. how to reset dahua camera
A factory reset will erase all custom settings, including IP addresses, Wi-Fi credentials, motion detection zones, and recorded video paths. It will revert the camera to its default state (Default IP: 192.168.1.108 , Username: admin , Password: admin or blank). Method 1: Hardware Reset (The Physical Button) Use this when you have physical access to the camera and cannot log in. Most Dahua cameras (excluding some dome models) have