H685t-W 4G Router Quick Start Guide

This guide covers the hardware setup and first-time configuration of the Proroute H685t-W 4G router. Follow the steps in order — from inserting the SIM to verifying an internet connection.


What's in the box

  • Proroute H685t-W 4G Router
  • Mains power adapter
  • Cellular stick antennas
  • Wi-Fi stick antennas
  • Cellular mag-mount antennas
  • Wi-Fi mag-mount antennas
  • Ethernet patch lead

Mag-mount antennas require a flat metal ground plane of at least 30 cm × 30 cm to function correctly. Do not place them on plastic, wood, or other non-conductive surfaces.


Default credentials

All routers ship with unique credentials printed on the underside label. Locate the label before proceeding.

Parameter Default value
LAN IP address 192.168.8.1
WebUI username admin
WebUI password Unique — printed on underside label
Wi-Fi SSID Printed on underside label
Wi-Fi password Unique — printed on underside label
SSH username router
SSH password Same as WebUI password

Step 1: Insert the SIM

  1. Remove the rear SIM cover (two screws)
  2. Slide and lift the SIM holder
  3. Place the SIM in the tray — ensure the SIM PIN is removed or known before inserting
  4. Press the SIM holder down and slide to lock
  5. Refit the cover

Step 2: Attach antennas

  1. Connect the two cellular antennas to the CELL 1 and CELL 2 ports
  2. Connect the two Wi-Fi antennas to the WIFI labelled ports (if Wi-Fi will be used)
  3. For mag-mount antennas, place them on a suitable flat metal surface away from obstructions — elevated positions near a window typically give the best signal

Step 3: Power on

  1. Connect the mains power adapter and switch on
  2. Wait 60–90 seconds for the router to fully boot — LEDs will stabilise

Step 4: Access the web interface

  1. Connect a PC to a LAN port on the router using the supplied Ethernet cable
  2. Ensure the PC is configured to obtain an IP address automatically (DHCP)
  3. Open a browser and navigate to https://192.168.8.1
  4. Log in with username admin and the password from the underside label
  5. Set a new secure password when prompted on first login

If the login page does not load, see How to Access the Router's Web Interface for full troubleshooting steps including static IP configuration and common connection problems.


Step 5: Update firmware

Update to the latest firmware before configuring the router. This ensures known issues are resolved and all features are available.

  1. Download the latest firmware for the H685t-W from the Proroute support page
  2. In the WebUI, navigate to System > Firmware Upgrade
  3. Upload the firmware file and apply the update
  4. Do not power off the router during the upgrade — wait for it to reboot automatically

For the full firmware upgrade procedure including safe upgrade options, see Firmware Upgrade Process.


Step 6: Review security settings

Before deploying, review and apply the recommended security configuration — admin password strength, firewall rules, Wi-Fi security, and remote access controls. Do not skip this step for any internet-connected deployment.

See Important Device Security Guidelines & Settings.


Step 7: Configure APN and mobile connection

The router requires the correct APN to establish a mobile data connection. Many SIMs auto-configure — if the router shows a connected status with an assigned IP address after inserting the SIM, no further APN configuration is needed.

  1. In the WebUI, navigate to Network > Mobile
  2. Enter the APN provided by your SIM or network operator
  3. Add username, password, and authentication type (PAP/CHAP) if required by your operator
  4. Click Save and Apply
  5. Check Status > Overview — the mobile interface should show Connected with a signal strength reading and an assigned IP address

For detailed APN configuration including operator-specific settings, see Configure APN Settings (Connect Router to the Internet with a SIM).


Step 8: Wi-Fi setup (optional)

The H685t-W includes a 2.4 GHz Wi-Fi radio. If Wi-Fi is not required in your deployment, disable it at Network > Wi-Fi.

  1. Navigate to Network > Wi-Fi and click Edit on the wireless interface
  2. Set the SSID to a name appropriate for your deployment
  3. Under Wireless Security, confirm WPA2-PSK is selected — do not use WEP or open (no encryption)
  4. Set a strong, unique passphrase — the default passphrase is on the label, but anyone with physical access to the router can read it
  5. Click Save and Apply

Troubleshooting

Issue Resolution
Web interface not accessible at 192.168.8.1 Confirm the Ethernet cable is connected to a LAN port (not the WAN port). Ensure the PC is set to obtain an IP via DHCP, or set a static IP of 192.168.8.10 with subnet mask 255.255.255.0. See How to Access the Router's Web Interface.
No mobile data / modem not connecting Verify the APN settings match your operator's requirements. Check the SIM is seated correctly and has no PIN lock active. Check antenna connections and signal quality at Status > Mobile. See Configure APN Settings.
Poor cellular signal Reposition antennas — elevated locations near a window improve signal. For mag-mount antennas, ensure they are on a flat metal ground plane of at least 30 cm × 30 cm. Check signal quality metrics at Status > Mobile.
Forgotten admin password Perform a factory reset — hold the RST button for 10 seconds while the router is powered on, then wait 60 seconds for it to reboot. See Restore Router to Default Factory Settings.