H820t-W-G-RS485 Quick Start Guide

This guide covers the hardware setup and first-time configuration of the Proroute H820t-W-G-RS485 4G router. This variant includes a GNSS receiver and RS485 serial interface in addition to the standard H820t-W features. Follow the steps in order — from inserting the SIM to verifying an internet connection.

The H820t-W-G-RS485 shares the same firmware as the H820t-W. Before upgrading firmware, confirm your hardware revision to ensure you install the correct firmware file. See H820t-W Hardware Revisions & Firmware Compatibility.

What's in the box

• 1× Proroute H820t-W-G-RS485 4G Router
• 1× Mains power adapter
• 2× Cellular stick antennas
• 2× Wi-Fi stick antennas
• 2× Cellular mag-mount antennas
• 2× Wi-Fi mag-mount antennas
• 1× GNSS antenna
• 1× Ethernet patch lead

Default credentials

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

Step 1: Insert the SIM

1. Locate the SIM slot on the router
2. Insert the SIM card — ensure any PIN lock is removed or the PIN is known before inserting
3. Press until the SIM clicks into place

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. Connect the GNSS antenna to the GPS port — position it with a clear view of the sky for best GPS reception
4. For mag-mount antennas, place them on a flat metal surface of at least 30 cm × 30 cm — 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 — the SYS LED will begin flashing green and the CELL LED will illuminate orange

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.

Step 5: Update firmware

Update to the latest firmware before configuring the router. Confirm your hardware revision before downloading to ensure compatibility.

1. Identify your hardware revision — see H820t-W Hardware Revisions & Firmware Compatibility
2. Download the correct firmware file from the Proroute support page
3. In the WebUI, navigate to System > Firmware Upgrade
4. Upload the firmware file and apply the update
5. Do not power off the router during the upgrade

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

Step 6: Review security settings

Before deploying, review and apply the recommended security configuration.

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 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
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, see Configure APN Settings.

Step 8: Configure GNSS (optional)

The GNSS receiver provides location data accessible via the router WebUI and API. To enable it:

1. Ensure the GNSS antenna is connected to the GPS port and has a clear view of the sky
2. In the WebUI, navigate to Services > GPS
3. Enable the GNSS module and configure output as required
4. Click Save and Apply

Step 9: Wi-Fi setup (optional)

If Wi-Fi is not required, disable it at Network > Wi-Fi.

1. Navigate to Network > Wi-Fi and click Edit on the wireless interface
2. Set the SSID and confirm WPA2-PSK is selected
3. Set a strong, unique passphrase
4. Click Save and Apply

Troubleshooting