Default access
Accessing web UI
Change admin password
Set device time
⚠ DANGER: High Voltage. Installation should be performed by a qualified electrician.
Power Up: Restore power. The LCD should illuminate and begin counting.
Refer to your official manual pages 5–9 for the exact parameter sequence. Below is the standard process. zn-401s manual
Set administrator password immediately; avoid default credentials.
Configure network settings: DHCP for automatic, or static IP if you need fixed addressing.
Check for firmware updates in the system menu and apply if available.
Since we can't find the official document, we have to reverse-engineer the setup. Here is the practical workflow to figure out your ZN-401S without the schematic. Default access
LAN subnet
DHCP server
Wireless
Port forwarding & DMZ
UPnP
QoS