Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your 4W Solar LoRa Node. This device is designed for establishing communication networks in remote areas where traditional 4G/Wi-Fi networks are unavailable, utilizing LoRa technology and the Meshtastic application.
For any issues, please contact the seller for support. Please read this guide carefully and keep it in a safe place for future reference.
Video: IP66 Waterproof Test - Demonstrates the device's water resistance by submerging it in water and showing continued functionality, including message transmission between two units.
1. Packing List
Please verify that all items are present in your package:
- Solar LoRa Node: 1 unit
- 3DB Antenna: 1 unit
- Fixed Bracket: 1 unit
- Fixed Strap: 1 unit
- Fixed Screws: 1 pack
- Type-C Data Cable: 1 unit
- User Manual: 1 copy
Note: Batteries are NOT included and must be purchased separately.

Image: Contents of the product package, including the solar LoRa node, fixed bracket, strap, Type-C data cable, and screws.
2. Setup and Installation
2.1 Battery Installation
- The Solar LoRa Node requires 4 x 18650-type batteries (not included).
- When purchasing batteries, look for the 18650 type. We recommend batteries with a capacity greater than 3000mAh/Pcs.
- Open the battery cover on the back of the panel.
- Insert the 18650 batteries, ensuring correct positive (+) and negative (-) directions. The panel will not work without batteries.
- After installing the batteries, ensure the waterproof silicone gasket is properly seated. This is critical for sealing.
- Tighten the screws to apply pressure to the silicone gasket, ensuring its waterproof function.
- Use the screw waterproof silicone plugs from the accessory bag to seal all 8 screw holes.

Image: Internal view of the Solar LoRa Node, highlighting the four 18650 battery slots and the Meshtastic IoT board. Note: Batteries are not included.

Image: Information regarding battery type (18650) and a clear indication that batteries are not included.
2.2 Initial Charging
For the first use, please fully charge the battery. Charging time is related to the total battery capacity; higher capacity batteries will require longer charging times. The battery LED lights will all be lit up when fully charged.
2.3 Physical Installation
- Install the Solar LoRa Node in a location that receives more than 5 hours of direct sunlight daily.
- When installing, orient the solar panel toward the south. The angle with the ground should be between 30° and 45° for optimal sunlight exposure.
- Use the provided fixed bracket or strap to secure the node. The strap can be used to attach the solar LoRa node to a tree.

Image: A person installing the Solar LoRa Node in an outdoor setting, demonstrating its portability and ease of deployment.

Image: The Solar LoRa Node secured to a tree using the provided strap, illustrating a common installation method.
3. Operation
3.1 Product Indicators and Controls
The Solar LoRa Node features several LEDs and controls:
- LED1: Charge LED
- LED2-5: Battery Level (25%, 50%, 75%, 100%)
- LED6: Output LED
- Power Switch: Turns the LoRa module ON/OFF.
- Type-C (5V2A) Input: For emergency charging.
- Solar Cells: For primary power generation.
Charging Status:
- ON: Charging
- OFF: Not Charging
- When the battery is fully drained, all lights will turn off and the charging indicator light will not illuminate. It will only start flashing when the battery level reaches 5%.
Battery Level Indicators:
- 25%: Turns Green 25%; Turns Red 5%
- 50%: Battery Level 50%
- 75%: Battery Level 75%
- 100%: Battery Level 100%
Output Status:
- ON: LoRa Power On
- OFF: LoRa Power Off
- When the battery level drops below 5%, the output will turn off and wait for charging. When the battery is recharged to 55% or above, the output will automatically turn on again.
All solar panels output power and charge simultaneously.
3.2 Meshtastic App Download
The Solar LoRa Node operates with the Meshtastic application. Please connect your mobile phone to a WiFi or 4G network and scan the QR codes below to download and install the app:

Android

iOS
3.3 Adding Device to App
- Open the battery cover on the panel, turn on the power, and wait for the LoRa module to start up.
- Run the Meshtastic app, find the Bluetooth scan option, and search for Bluetooth devices. Ensure Bluetooth is enabled on your mobile phone.
- Select your device (e.g., "Meshtastic_04f8") to add equipment.
- After submitting the application and connecting via Bluetooth, a 6-digit PIN code will appear on the LoRa display. Enter this PIN code into the app to confirm and add the device.
- For devices without a display screen, the default PIN code is 123456.

Image: Screenshots of the Meshtastic app, illustrating the process of connecting to a device via Bluetooth and the chat interface.
3.4 Adding a New Channel
To communicate with others, you need to create or join a channel:
- In the Meshtastic app, create a new channel.
- Configure the key parameters for the channel (e.g., frequency, encryption keys).
- Once created, share the generated QR code with your friends. They can scan this code to join your channel.
Important: After successfully adding a friend, do not change the channel parameters, otherwise you will not be able to receive messages from your friends.
3.5 Joining an Existing Channel
If a friend has invited you to their channel:
- Use Meshtastic's SCAN feature in the app.
- Scan the QR code information shared by your friend.
- Once your friend confirms, you will successfully join their channel.
3.6 Start Chatting
Switch to the chat option in the app to see the channels that have been added. Once you enter a channel, you can send your first message.
The app allows you to check the signal strength and battery status of all nodes connected to your channel. Communication is possible within range, but not possible without a signal.
3.7 Network Expansion (Decentralized Communication)
In LoRa communication, a single node can automatically form a network and establish a grid-based network. The more solar-powered nodes there are, the stronger the network becomes, with smoother communication and a wider communication range.
The Solar LoRa Node is compatible with other LoRa devices based on the Meshtastic protocol, allowing nodes from different brands to join the same network and enhancing network expandability.

Image: A visual representation of a LoRa mesh network, showing multiple nodes communicating over distances up to 5km and connecting to user devices.

Image: An illustration demonstrating how adding more solar nodes extends the overall communication range of the Meshtastic network to 10km.
4. Maintenance
4.1 Cleaning
Please clean the dust off the solar panels once a month to ensure efficient power generation.
4.2 Battery Replacement
It is recommended to replace the internal 18650 batteries every 12 months to maintain optimal performance.
4.3 Backup Charging
In case of continuous rainy weather or insufficient sunlight, a Type-C emergency charging port is reserved. Power can be supplemented through an external 5V power source (such as a power bank) to avoid disconnection.

Image: Comparison of the old and new charging port designs for the Solar LoRa Node.
5. Troubleshooting
- Device not powering on: Ensure 4 x 18650 batteries are correctly installed with proper polarity. The panel will not work without batteries.
- No output/communication: If the battery level drops below 5%, the output will turn off. Charge the device until the battery is recharged to 55% or above for the output to automatically turn on again.
- Cannot connect via Bluetooth: Ensure Bluetooth is enabled on your mobile phone. For devices without a display screen, the default PIN code is 123456.
- Friends not receiving messages: If you changed channel parameters after adding friends, they might not receive messages. Re-add the channel with the correct parameters.
- OTA (Over-The-Air) firmware update issues: Ensure the Type-C cable used for connection to your PC is capable of data communication, not just charging.
6. Specifications
| Parameter | Description |
|---|---|
| Master Chip | ESP32-S3R8/nrf52480 |
| LoRa Node Chip | SX1262 |
| USB to Serial Chip | CP2102 |
| Frequency | 470-510MHz, 863-928MHz |
| Max. TX Power | 21 ±1dBm/28 ±1dBm |
| Max. Receiving sensitivity | -148dBm@SF12 BW=125kHz |
| Antenna | 5dB ±2dBm (LoRa/2.4G) |
| Bluetooth | Bluetooth 5 (LE) |
| Transmission Distance | 2 km in urban areas, 5 km in open areas, and 10 km in coastal or flat areas. |
| APP | Meshtastic (Android and iOS) |
| Photovoltaic panel type | Monocrystalline silicon |
| Power generation capacity | 4W |
| Battery type | Max 4 PCS 18650 Battery |
| Overcharge protection voltage | 4.28V |
| Overvoltage protection voltage | Software stops at 3.3V, hardware stops at 3V. |
| Plug type | Type C (5V2A) |
| Operating Temperature | -15°C to 55°C |
| Package size | 20x16x6cm |
| Weight | 0.55kg |
6.1 LoRa Frequency by Region
Choosing the correct LoRa frequency will make it perform better in your area. Refer to the table below for regional frequency guidelines:

Image: Detailed table outlining LoRa frequency ranges, duty cycles, and power limits for various countries and regions.
7. User Tips
- To enable mutual communication, you will need at least two LoRa nodes. If you only have one, consider purchasing an additional unit.
- Always ensure the waterproof silicone gasket is correctly seated and screws are tightened after battery installation to maintain IP66 protection.
- For optimal performance, position the solar panel to receive maximum direct sunlight, ideally facing south at a 30-45 degree angle.
- Regularly check the Meshtastic app for signal strength and battery status of your nodes, especially in remote deployments.
8. Warranty and Support
If you encounter any problems with the product, please contact the seller directly. They are committed to resolving all your issues.
8.1 Firmware Updates (OTA)
You can update the device firmware Over-The-Air (OTA) by connecting the LoRa Node to a PC using a Type-C data cable. Please ensure the cable supports data communication, not just charging.
- Install the CP2102 serial port driver on your PC. Download from: https://www.silabs.com/software-and-tools/usb-to-uart-bridge-vcp-drivers?tab=downloads
- Once connected, the ESP32 device should be visible in your PC's device manager.
- Visit https://flasher.meshtastic.org/ to download and update the latest firmware.
8.2 Additional Resources
For more detailed information and community support, please visit the official Meshtastic documentation:

Image: QR code linking to Meshtastic documentation for further assistance.
All versions of this user manual are the property of iXSolarleap.





