Cudy LT12 4G LTE Cat 12 WiFi Router User Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your Cudy LT12 4G LTE Cat 12 WiFi Router. The LT12 is designed to provide high-speed internet connectivity using 4G LTE-A Pro technology, offering data rates up to 600/150 Mbps. It features a Qualcomm chipset, dual SIM card slots, AC1200 dual-band WiFi, and four Gigabit Ethernet ports, making it suitable for various networking needs.

The router incorporates 4x4 MIMO high-performance antennas to enhance service capacity and expand internet coverage. It also supports multiple VPN clients and advanced network configurations.

2. Package Contents

Please verify that your package contains the following items:

• Cudy LT12 4G LTE Cat 12 WiFi Router
• Power Adapter
• Ethernet Cable
• Detachable Cellular Antennas (4x 5dBi)
• Detachable WiFi Antennas (2x 5dBi)
• Quick Installation Guide

Image: The retail packaging box for the Cudy LT12 router, showing the device and key features.

3. Physical Overview

3.1 Front Panel

Image: Front view of the Cudy LT12 router, displaying the Cudy logo and LED indicators for power, Wi-Fi, and cellular signal strength.

The front panel features LED indicators that provide status information:

• Power LED: Indicates power status.
• Wi-Fi LED: Indicates Wi-Fi network activity.
• Cellular Signal LEDs: Indicate the strength of the 4G LTE signal.

3.2 Rear Panel

Image: Rear view of the Cudy LT12 router, highlighting the power input, ON/OFF button, WPS/RESET button, WAN/LAN ports, and cellular antenna connectors.

The rear panel includes the following ports and buttons:

• Power Input: Connects to the power adapter.
• ON/OFF Button: Powers the device on or off.
• WPS/RESET Button: Press briefly for WPS function; press and hold for 5-10 seconds to reset to factory defaults.
• WAN/LAN Ports (4x Gigabit): One port can function as either WAN or LAN, while the other three are dedicated LAN ports.
• Cellular Antenna Connectors (4x SMA): For connecting the external cellular antennas.
• SIM Card Slots (2x Nano SIM): For inserting Nano SIM cards.

Image: A detailed diagram illustrating the four cellular antenna connectors on the rear of the Cudy LT12 router, with an example of an SMA connector.

4. Setup Instructions

Follow these steps to set up your Cudy LT12 router:

1. Insert SIM Card(s): Locate the Nano SIM card slots on the rear panel. Gently insert one or two Nano SIM cards into the designated slots until they click into place. Ensure the SIM cards are correctly oriented.
2. Attach Antennas: Screw the four cellular antennas and two WiFi antennas onto their respective connectors on the rear panel. Ensure they are securely tightened.
3. Connect Power: Connect the provided power adapter to the router's power input and then plug it into a power outlet. Press the ON/OFF button to power on the router.
4. Initial Connection: Wait for the router to boot up. The Power LED should be solid blue, and the Cellular Signal LEDs should indicate signal strength. You can connect to the router via Wi-Fi using the default SSID and password printed on the label at the bottom of the router, or via an Ethernet cable to one of the LAN ports.
5. Access Web Interface: Open a web browser and enter the default IP address (usually 192.168.10.1 or 192.168.1.1) to access the router's web management interface. Log in using the default credentials (usually admin/admin).

Image: A visual representation of the simple 'Plug and Play' setup: 1. Insert SIM Card, 2. Power the device, 3. Enjoy Internet, with a person using a laptop connected to the router.

5. Operating Instructions

5.1 Dual SIM and WAN Failover

The Cudy LT12 features dual SIM slots for redundancy, ensuring continuous internet connectivity. You can configure the router to use SIM card 1, SIM card 2, or automatically select between them. Additionally, the WAN/LAN port can be configured as a WAN port to use a landline internet connection, with the 4G cellular connection acting as a backup in case the primary WAN fails.

Image: A diagram showing two Nano SIM cards being inserted into the redundant SIM slots on the Cudy LT12 router.

Image: A diagram demonstrating the WAN Internet Cellular Backup feature, where a wired WAN connection is backed up by a cellular SIM connection.

5.2 VPN Clients

The router supports various VPN clients, allowing you to establish secure connections to VPN servers. This encrypts your online data and traffic. Supported VPN protocols include:

• PPTP
• L2TP
• OpenVPN
• WireGuard
• Zerotier
• IPsec

These features are accessible through the router's web management interface. The router is also compatible with over 20 DDNS providers for remote management of devices like cameras.

Image: A graphic displaying the logos of various VPN protocols supported by the Cudy LT12 router, including L2TP, Zerotier, PPTP VPN, OpenVPN, WireGuard, and IPsec.

5.3 Advanced Features

• 4G Band Lock: This feature allows you to select specific LTE bands for improved signal stability and performance in certain areas.
• TTL Settings: Configure TTL (Time To Live) settings to manage how your router interacts with cellular networks, which can be useful for specific carrier requirements.
• DNS over TLS: Enhance your network security and privacy by configuring DNS over TLS with providers like Cloudflare, Google, or Quad9.
• Cudy App Management: Manage your router settings and network from your smartphone using the Cudy app.
• Cudy Mesh: The LT12 supports Cudy Mesh, allowing it to work with other Cudy Mesh devices to create a seamless whole-home Wi-Fi network.

6. Maintenance

• Regular Cleaning: Keep the router clean and free from dust to ensure proper ventilation. Use a soft, dry cloth for cleaning.
• Firmware Updates: Periodically check the Cudy official website for firmware updates. Updating the firmware can improve performance, add new features, and fix bugs. Follow the instructions provided with the firmware update carefully.
• Optimal Placement: For best Wi-Fi and cellular signal, place the router in a central location, away from obstructions and sources of interference.

7. Troubleshooting

7.1 No Internet Connection

• Check SIM Card: Ensure the SIM card is correctly inserted and activated with a data plan.
• Signal Strength: Verify the cellular signal strength LEDs on the front panel. If the signal is weak, try repositioning the router or adjusting the antennas.
• APN Settings: Confirm that the APN settings in the router's web interface match those provided by your cellular carrier.
• WAN Connection: If using a wired WAN connection, ensure the Ethernet cable is securely connected and the modem/ONT is working correctly.
• Reboot: Power cycle the router by turning it off, waiting 10 seconds, and turning it back on.

7.2 Slow Wi-Fi Speed

• Router Placement: Ensure the router is centrally located and not obstructed by walls or large objects.
• Interference: Avoid placing the router near other electronic devices that might cause interference (e.g., microwaves, cordless phones).
• Channel Selection: In the router's Wi-Fi settings, try changing the Wi-Fi channel to avoid congestion with neighboring networks.
• Device Distance: Move closer to the router to check if the speed improves.

7.3 Cannot Access Web Management Interface

• IP Address: Ensure you are using the correct IP address for the router (e.g., 192.168.10.1).
• Network Connection: Verify your device is connected to the router's network (either via Wi-Fi or Ethernet).
• Browser Cache: Clear your web browser's cache and cookies, or try a different browser.
• Firewall/Antivirus: Temporarily disable any firewall or antivirus software on your computer that might be blocking access.
• Reset Router: If all else fails, perform a factory reset by pressing and holding the WPS/RESET button for 5-10 seconds. Note that this will erase all custom settings.

8. Specifications

9. Warranty and Support

For warranty information, please refer to the documentation included with your product or visit the official Cudy website. Cudy provides official videos for step-by-step setup guidance, and most Cudy home devices, including the LT12, support management via the Cudy app.

For technical support, troubleshooting assistance, or to download the latest firmware and user manuals, please visit the Cudy support page on their official website. You can also contact Cudy customer service directly through the contact information provided on their website.