Overview This is a Raspberry Pi IoT driver board for e-Paper raw panels. It allows getting text/image data from IoT clouds through NB-IoT/eMTC/EDGE/GPRS network connection, and then display them on the e-Paper. Specifications Communication interface: UART + SPI (4-wire SPI by default, switch to 3-wire SPI by soldering) Communication module: SIM7000E Quad-Band LTE-FDD B3/B8/B20/B28 GPRS/EDGE 900/1800Mhz GNSS (GPS, GLONASS, BeiDou, and Galileo, GNSS antenna is required and NOT included) Support SIM card: NB-IoT specific card, or 1.8V/3V normal SIM card Applicable region: China mainland, southeast Asia, Europe, Africa, Australia, etc. (for reference only, please check the supported bands according to your local service provider) Power supply voltage: 5V Logic level: 5V / 3.3V Applicable battery: 3.7V lithium battery via PH2.0 connector (NOT included) Dimensions: 56.5mm x 65mm Applications Shelf label AD label IoT applications which requires remote refreshing Package Content e-Paper NB-IoT/GPRS HAT x1 LTE full bands PCB antenna x1 e-Paper Adapter x1 24PIN FFC x1 2×20PIN female pinheader x1 RPi screws pack (2pcs) x1 Note 1.Raspberry Pi and e-Paper panels are NOT included. 2.If you have any problem , please contact us via Amazon message ,thanks .