ures: 2. MCU nRF52840 (Bluetooth), LoRa chip SX1262 3. Low power consumption, deep sleep 11 μ A 4. Powerful display function (optional), onboard 1.14-inch TFT-LCD display screen 5. 135 (H) RGBx240 (V) can display 262K colors 6. Rich interfaces (2 * 1.25mmLiPo connectors, 2 * 1.25mm solar panel connectors) 7. The 7.8 * 1.25mm GNSS module connector greatly increases the expandability of the board   Product Description: Mesh Node T114 is a low-power development board based on nRF52840 and SX1262, supporting LoRa and Bluetooth 5.0. Integrated with various power interfaces (5V USB, lithium battery, and solar panel), optional 1.14-inch TFT display screen and GPS module as accessories, with powerful remote communication capabilities, scalability, and low-power design. Use the Heltec nRF52 development environment and library. You can use it for LoRa/LoRaWAN development work, as well as for running some open source projects such as Meshtastic. Parameter: Microcontroller: nRF52840 LoRa Node Chip: SX1262 Frequency: 433-510mhz 863-928mhz * (optional) Maximum TX power: 21 ± 1dBm Maximum receiving sensitivity: -135dBm@SF12 BW=125KHz Bluetooth: Bluetooth LE: Bluetooth 5, Bluetooth mesh Hardware resources: USB 2.0, 4 * SPI, 2 * TWI, 2 * UART, 4 * PWM, QPSI, 12S, PDM, QDEC, etc. Storage: 1M ROM 256KB SRAM Interface: Type-C USB 2 * 1.25 lithium battery connector 2 * 1.25 solar panel connector LoRa ANTIPEX1.0 8 * 1.25 GPS module connector 2 * 13 * 2.54 plug pins Battery: Powered and charged by a 3-4.2V battery. (The product does not come with a battery) Working temperature: -20~70 & 8451; Size: 50.80 * 22.86mm Electrical characteristics: Deep sleep:~11uA Tracker mode sleep:~22uA GPS off, TFT off:~9mA GPS off, TFT on:~20mA GPS on, TFT on:~51mA Display: On board 1.14-inch TFT-LCD display (optional) GPS module description: Package include: Package 1: 1X development board 2X needle arrangement 2X terminal wire 1X antenna Package 2: 1X development board 1X shell 1X antenna Package 3: 1XGPS module