In some older firmware versions or specific regional models, you may also encounter: administrator Password: 123456 Understanding the ZKTeco Web 3.0 Interface

Disable Unused Services: If you do not need remote web access, consider disabling the web server feature or restricting access to specific internal IP addresses via your firewall. Troubleshooting Common Login Issues If the web page fails to load or the login is rejected:

Because this interface is accessible over a local network (LAN) or sometimes the internet, using the default "admin/admin" combination is a significant security risk. Unauthorized users who find your device’s IP address could potentially download user databases, modify access schedules, or even open doors remotely. Step-by-Step: Logging in for the First Time