Heltec Mesh Node T114 V2.0 868Mhz nRF52840 SX1262

Product detailed description

Heltec Mesh Node T114 V2.0 is a development board designed for low power consumption, which combines nRF52840 microcontroller and SX1262 LoRa chip, and supports LoRa and Bluetooth 5.0 communication. The board offers various power options, including 5V USB, lithium polymer battery and solar panel. The board also features a connector for a GNSS module, making it easy to create a tracker – the GPS module is not included and must be purchased separately.

Key features:

• Microcontroller: nRF52840 with Bluetooth 5.0 and Bluetooth Mesh support.
• LoRa Chip: SX1262 with a maximum transmit power of 21 ± 1 dBm and receiver sensitivity up to -135 dBm at SF12 BW=125 kHz.
• Display: 1.14" TFT-LCD with a resolution of 135 × 240 pixels and the ability to display up to 262,000 colours.
• Power Supply: via 5V USB, lithium-polymer battery (3–4.2 V) or solar panel.
• Interface:
  • USB 2.0 Type C,
  • lithium-polymer battery connector (JST-ZH -2 1.25 mm),
  • solar panel connector (JST-ZH -2 1.25 mm),
  • GNSS module connector (8-pin JST-ZH -8 1.25 mm) – module not included,
  • IPEX1.0 connector for LoRa antenna.
• Power Consumption: approximately 11 µA in deep sleep.
• Operating Conditions: temperature range -20 to 70 °C, relative humidity up to 90 % (non-condensing).
• Dimensions: 50.80 × 22.86 mm.

Recommended Accessories:

• GNSS module for tracker function:
  • Heltec L76K GNSS Module GPS/BeiDou/GLONASS/QZSS with Antenna – connects directly to the 8-pin connector on the board

Specifications:

• MCU: nRF52840
• LoRa Chip: SX1262
• Frequency: 470–510 MHz; 863–870 MHz; 902–928 MHz
• Max. Transmission Power: 21 ± 1 dBm
• Max. Receiver Sensitivity: -135 dBm @ SF12, BW = 125 kHz
• Bluetooth: Bluetooth LE 5, Bluetooth mesh
• Peripherals: USB 2.0, 4× SPI, 2× TWI, 2× UART, 4× PWM, QSPI, I2S, PDM, QDEC etc.
• Memory: 1 MB ROM, 256 kB SRAM
• Interface:
  • USB Type-C
  • 2×1.25 mm battery connector
  • 2×1.25 mm solar panel connector
  • 8x1.25 mm GNSS module connector (module not included)
  • LoRa antenna (IPEX1.0)
  • 2x13x2.54 mm pin header
• Battery: 3–4.2 V, power supply and charging
• Display: integrated 1.14" TFT-LCD
• Power consumption:
  • Deep sleep: approx. 11 µA
  • Tracker sleep mode: approx. 22 µA
  • GNSS off, TFT off: approx. 9 mA
  • GNSS off, TFT on: approx. 20 mA
  • GNSS on, TFT on: approx. 51 mA
• Operating temperature: -20 to 70 °C
• Dimensions: 50.80 × 22.86 mm

Scope of Delivery:

• 1× Heltec Mesh Node T114 V2.0 868 MHz nRF52840 SX1262

Note:

• GPS/GNSS module is not included and is sold separately.
• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.