MCU nRF52840 (Bluetooth), LoRa chip SX1262. Low power consumption, deep sleep 11uA. Rich interfaces (2x1.25mm LiPo connector, 2x1.25mm solar panel connector, 8x1.25mm GNSS module connector) greatly increase the scalability of the board. MCU: nRF52840 LoRa Node Chip: SX1262 Memory: 1M ROM 256KB SRAM Bluetooth: Bluetooth 5, Bluetooth mesh, BLE Storage temperature: -30-80℃ Operating temperature: -20-70℃ Operating Humidity: 90%(No condensing) Power Supply: 3-5.5V (USB),3-4.2(Battery) Hardware Resource: USB 2.0, 2xRGB, 2xButton, 4xSPI, 2xTWI, 2xUART,4xPWM, QPSI, I2S, PDM,QDEC Etc. Interface: Type-C USB, 2x1.25 lithium battery connector, 2x1.25 solar panel connector, LoRa ANT (IPEX1.0),8x1.25 GPS module connector, 2x13x2.54 Header Pin Specifications: A:470-510mhz/B:863-928mhz Colour:Photo Color Material:PCBandelectronic componentsandplastic Package Contents: 1 x T114 no Screen kit 1 x GNSS Module 1 x case kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.