Introducing the NRF-TXT

The NRF-TXT is an ultra-efficient, portable communication device designed to be the longest-running Meshtastic node possible while remaining compact and easy to carry. This standalone unit is built for off-grid scenarios, ensuring reliable communication without requiring a smartphone or Bluetooth—though Bluetooth remains available if enabled.

Designed for preppers, outdoor adventurers, and emergency responders, the NRF-TXT seamlessly integrates into the Meshtastic LoRa platform, enabling users to establish long-range mesh networks with multiple devices. Its optimized power efficiency ensures extended battery life, making it ideal for deployments in the wilderness, disaster response, and long-term remote use.

For outdoor enthusiasts, the GPS module allows real-time location sharing, essential for hiking, large gatherings, or any situation where cellular service is unavailable. Additionally, the buzzer ensures you never miss an important message by providing audible notifications. The folding antenna enhances portability, allowing the device to be stored and carried with ease.

Key Features:

✅ Longest-Running Portable Node – Engineered for extreme power efficiency, maximizing battery life while remaining lightweight and compact.

✅ Standalone Operation – Functions independently without requiring a smartphone or Bluetooth connectivity, though Bluetooth is available if needed.

✅ Seamless Meshtastic Integration – Fully compatible with all Meshtastic nodes, allowing effortless mesh network expansion.

✅ Cost-Effective Entry Device – A budget-friendly solution for those looking to get started with off-grid communication without committing to higher-priced alternatives.

✅ User-Friendly Interface – Features a 1.14-inch OLED display and an integrated keyboard, making messaging easy and intuitive.

✅ Buzzer Notifications – Alerts users with an audible tone whenever a new message is received.

✅ GPS Tracking – Enables real-time location sharing, perfect for hikers and large events. The on-screen directional indicator points toward other users on the network.

✅ Folding Antenna – Enhances portability by allowing the device to be easily stored and carried, making it perfect for on-the-go use.

✅ Optional BME680 Sensor – Monitors ambient humidity, barometric pressure, temperature, and VOC levels. While still in an experimental phase, future firmware updates will improve accuracy—ideal for users concerned about air quality.

Specifications:

• Core Microcontroller: Heltec Mesh Node T114 V2
• LoRa Node Chip: SX1262
• Frequency: 863~928MHz
• Battery: 4000mAh Li-ion (~276 hours standby, ~198 hours with GPS enabled)
• Antenna: Folding EOTH 868MHz - 915MHz 3dBi antenna
• Buzzer: Passive Buzzer 9042 16Ω
• GPS Module: L76K GNSS (Super Low Powered)
• Temperature, Humidity, and Pressure Sensor (Optional): BME680 Sensor (Coming Soon)
• Keyboard: Soft Silicone 50-Key QWERTY
• Bluetooth: Bluetooth 5 (LE)
• Connectivity: USB-C port
• Dimensions: 85mm x 45mm x 20mm
• Dimensions with Antenna: 102mm x 90mm x 20mm
• Weight: 6oz

Package Contents:

📦 NRF-TXT Device 📦 Built-in Rechargeable Battery 📦 Folding Antenna 📦 User Guide

With its unmatched battery efficiency, rugged portability, and seamless Meshtastic integration, the NRF-TXT is the ultimate solution for those who require a long-lasting, off-grid communication device. Whether you’re heading into the backcountry, preparing for emergencies, or attending crowded events, the NRF-TXT ensures you stay connected when it matters most.

Disclaimer:

I am responsible for the assembly, case design, and device configuration. However, I do not provide support for the Meshtastic app or its features. Also keep in mind that due to the 3D printed nature of the case, there may be some imperfections that may be outside of my control, however I am fully committed to provide the highest possible quality within my abilities.