Heltec Mesh Node T114 Rev.2 LoRa 863-870MHz with GPS

The Heltec Mesh Node T114 Rev.2 is a powerful development board that supports both LoRa and Bluetooth 5.0. Thanks to the efficient nRF52840 microcontroller and the SX1262 LoRa chip, this board is ideal for wireless networks, IoT projects, and Meshtastic applications. It features versatile power supply options including 5V USB, lithium battery, and solar panel connection.  The revised Rev.2 version brings improved signal stability, optimized RF performance, and a high-quality gold-plated PCB that ensures better longevity and signal transmission. With Heltec's compatible development environment, the board can be easily configured for LoRaWAN or Meshtastic networks.

Recommended Accessories:

• JST 1.25 Battery
• LoRa 868 MHz Antenna
• Solar Cell 5V 200mA 1W 110x60mm

Features:

• Powerful nRF52840 microcontroller – Supports Bluetooth 5.0 and offers high processing power.
• High-quality SX1262 LoRa chip – Enables long transmission ranges with low power consumption.
• Flexible power supply – Supports 5V USB, lithium batteries, and solar panels, making the board ideal for mobile and standalone applications.
• Extremely low power consumption – Only 11 µA in deep sleep mode, ideal for long-term operation.
• Advanced interfaces – Multiple GPIO pins, USB Type-C, SPI, I2C, UART, PWM, and GNSS module connection for versatile application possibilities.
• Optimized signal stability – Revised board architecture with 6-layer design to reduce interference and improve RF performance.
• Supports Meshtastic – Perfect for mesh networks, LoRaWAN, and other open radio protocols.

Application Examples:

• LoRaWAN gateway or node for wireless sensor networks.
• GPS tracking device for outdoor applications like hiking or logistics.
• IoT prototyping for smart building or agriculture technology projects.
• Mesh communication with Meshtastic for private or decentralized networks.
• Solar-powered environmental or weather stations for remote monitoring.

Documentation:

• Heltec Wiki
• Meshtastic Website
• Meshtastic Github

Technical Specifications:

• Manufacturer: Heltec Automation
• Microcontroller: nRF52840 (Bluetooth 5.0, Bluetooth Mesh)
• LoRa chip: SX1262
• Frequency ranges: 863-870 MHz
• Max. transmission power: 21 ± 1 dBm
• Receiver sensitivity: -135 dBm @ SF12 BW=125KHz
• Memory: 1MB ROM, 256KB SRAM
• Interfaces: USB 2.0, 4x SPI, 2x TWI, 2x UART, 4x PWM, I²S, PDM, QDEC
• Battery support: 3V – 4.2V (lithium battery support & charging function)
• Power consumption:
• Deep sleep: ~11 µA
• Tracker mode (GPS off, TFT off): ~9 mA
• GPS on, TFT on: ~51 mA
• Operating temperature: -20 °C to 70 °C
• Dimensions: 50.8 x 22.86 x 9.68mm
• Weight: 56g

Contents:

• 1x Heltec Mesh Node T114 Rev.2 LoRa 863-870MHz with GPS
• 1x LoRa antenna
• 2x SH1.25 battery / solar connection cables
• 2x 2.54mm pin headers 1x13 pin
• 1x L76K GNSS module
• 1x protective casing with external LoRa antenna