1. Introduction
Thank you for choosing the TODAAIR TD-MRT42 AX1800 Mesh WiFi 6 Router. This device is designed to provide high-speed, reliable wireless connectivity with extensive coverage for your home or office. This manual will guide you through the setup, operation, maintenance, and troubleshooting of your new router, ensuring optimal performance.
The TD-MRT42 features the latest WiFi 6 (802.11ax) technology, offering dual-band speeds up to 1800Mbps (580Mbps on 2.4GHz, 1201Mbps on 5GHz). It includes 1 Gigabit WAN/LAN port and 2 Gigabit LAN ports for stable wired connections, and provides coverage up to 3,300 sq. ft. for over 120 devices. It supports Router, AP, and Mesh operating modes.
2. Package Contents
Please verify that all items are present in your package:
- TODAAIR TD-MRT42 Mesh WiFi 6 Router
- Power Adapter
- Ethernet Cable
- Wall Mount Screws and Anchors
- Quick Installation Guide

Image: TODAAIR TD-MRT42 Mesh WiFi 6 Router and its retail packaging.
3. Product Overview
The TODAAIR TD-MRT42 router features a sleek, minimalist design with essential ports and indicators for easy management.
3.1. Front and Top View

Image: Top view of the TODAAIR TD-MRT42 router, highlighting its compact design.
3.2. Rear Panel Ports and Buttons
The rear panel of the router houses all necessary connection ports and control buttons, neatly concealed by a removable cover for cable management.

Image: Rear view of the TODAAIR TD-MRT42 router with its port cover removed, showing the WAN/LAN, LAN, Reset, Mesh, and DC 12V ports.
- RST (Reset Button): Press and hold for 5-10 seconds to restore factory default settings.
- MESH Button: Used for mesh pairing with other compatible TODAAIR mesh devices.
- WAN/LAN Port (Yellow): Connects to your modem or acts as an additional LAN port.
- LAN Ports (Black): Connects to wired devices like computers, gaming consoles, or smart TVs.
- DC 12V: Power input port.
3.3. LED Indicators
The router features an LED indicator on the top surface to provide status information:
- Red Light Flashing: Starting up or system error.
- Blue Light Flashing: Connecting to the network or during mesh pairing.
- Green Light On: Connected to the internet, operating normally.
4. Setup
Follow these steps to set up your TODAAIR TD-MRT42 Mesh WiFi 6 Router.
4.1. Hardware Connection
- Power off your modem.
- Connect one end of the Ethernet cable to the WAN/LAN port (yellow) of the TD-MRT42 router and the other end to your modem's LAN port.
- Connect the power adapter to the DC 12V port of the router and plug it into a power outlet.
- Power on your modem, then power on the TD-MRT42 router. Wait for the LED indicator to turn solid green, indicating a successful internet connection.
4.2. Initial Configuration (Router Mode)
This section details the configuration for the router's primary mode, allowing it to manage your network and provide internet access.
- Connect your computer to one of the router's LAN ports using an Ethernet cable, or connect wirelessly to the default WiFi network (SSID usually printed on the router's label).
- Open a web browser and enter
192.168.1.1in the address bar. - Enter the default password (usually 'admin' or as specified in the Quick Installation Guide) to log in.
- Follow the on-screen Setup Wizard. Select "SOHO Router" mode.
- Choose your internet connection type (e.g., DHCP Client for most cable/fiber connections).
- Set your desired WiFi network name (SSID) and password.
- Complete the setup. The router will reboot and apply settings.
Video: Step-by-step guide on configuring the TODAAIR Mesh WiFi 6 Router in Router mode, including network settings and WiFi setup.
4.3. AP Mode Configuration
If you wish to use the TD-MRT42 as an Access Point to extend an existing wired network, follow these steps:
- Connect your computer to the router and access the web interface as described in step 4.2.
- In the Setup Wizard, select "AP" mode.
- Configure the WiFi SSID and password for the access point.
- Complete the setup. The router will reboot and function as an Access Point.
Video: Instructions for setting up the TODAAIR Wi-Fi 6 Router in AP (Access Point) mode.
4.4. Mesh Pairing Instructions
To expand your WiFi coverage using multiple TODAAIR mesh devices, follow these pairing instructions:
- Ensure your main TD-MRT42 router is set up and connected to the internet.
- Place the additional mesh node (sold separately) within close proximity to the main router.
- Power on the additional mesh node.
- Press the MESH button on both the main router and the additional mesh node. The LED indicators will flash blue during the pairing process.
- Once the LED on the mesh node turns solid green, the pairing is successful. You can then relocate the mesh node to your desired location for extended coverage.
Video: A short preview demonstrating how TODAAIR mesh devices can extend WiFi coverage throughout a smart home layout, eliminating dead zones.
5. Operating Modes
The TODAAIR TD-MRT42 supports three primary operating modes to suit various networking needs:
- Router Mode: The default mode, where the device acts as the main router for your network, providing internet access and managing connected devices.
- AP (Access Point) Mode: Converts your wired network into a wireless network. Ideal for extending an existing wired network's wireless coverage.
- Mesh Mode: Allows multiple compatible TODAAIR devices to form a single, unified WiFi network, providing seamless roaming and extended coverage without signal drops.
6. Maintenance
To ensure the longevity and optimal performance of your TODAAIR TD-MRT42 router, consider the following maintenance tips:
- Placement: Place the router in a central location, away from obstructions, large metal objects, and devices that emit electromagnetic interference (e.g., microwaves, cordless phones).
- Firmware Updates: Regularly check the TODAAIR official website for firmware updates. Updating firmware can improve performance, add new features, and enhance security.
- Regular Reboot: Rebooting your router periodically (e.g., once a month) can help clear its memory and resolve minor performance issues.
- Cleaning: Keep the router clean and free from dust. Ensure ventilation holes are not blocked.
7. Troubleshooting
If you encounter issues with your TODAAIR TD-MRT42 router, refer to the following common troubleshooting steps:
- No Internet Access:
- Check if the router's LED is solid green. If not, verify modem connection and power.
- Ensure the Ethernet cable from the modem is securely connected to the WAN/LAN port.
- Reboot both your modem and router.
- Verify your internet connection type settings in the router's web interface.
- Weak WiFi Signal or Dead Zones:
- Relocate the router to a more central position.
- Minimize physical obstructions (walls, furniture) between your devices and the router.
- Consider adding additional TODAAIR mesh nodes to extend coverage.
- Cannot Access Web Management Page (192.168.1.1):
- Ensure your device is connected to the router's network (wired or wireless).
- Try a different web browser.
- Temporarily disable any VPN or firewall software on your computer.
- If the issue persists, perform a factory reset on the router (see RST button description).
- Forgotten WiFi Password:
- You can retrieve or change the WiFi password through the router's web management page.
- If you cannot log in, a factory reset will revert the WiFi password to its default (usually printed on the router's label).
8. Specifications
Detailed technical specifications for the TODAAIR TD-MRT42 Mesh WiFi 6 Router:
| Feature | Specification |
|---|---|
| Model Number | TD-MRT42 |
| Wireless Standard | WiFi 6 (802.11ax) |
| Wireless Speed | Up to 1.8Gbps (2.4GHz: 580Mbps, 5GHz: 1201Mbps) |
| Frequency Band Class | Dual-Band |
| Coverage Area | Up to 3,300 sq. ft. |
| Connected Devices | 120+ Devices |
| Ethernet Ports | 1 Gigabit WAN/LAN, 2 Gigabit LAN |
| Special Feature | WPS, Mesh Support |
| Antenna Type | Retractable (Internal) |
| Item Weight | 1.85 pounds |
| Package Dimensions | 12.83 x 9.29 x 2.83 inches |

Image: Visual representation of the TODAAIR TD-MRT42's technical specifications, including WiFi speed, coverage, and wired connectivity.
9. Warranty and Support
TODAAIR products are designed for reliability and performance. For warranty information, technical support, or further assistance, please refer to the contact details provided in your Quick Installation Guide or visit the official TODAAIR website.
Keep your purchase receipt for warranty claims.





