SIM800 Expansion board with gsm/gprs SMS function For Raspberry PI

Four band: MHz 850/900/1800/1900 Operating temperature: - 40 degrees C to 85 degrees C The baud rate is:9600 Connecting port: UART Raspberry PI Pin N.O. Pin name Description 1 3.3V 2 5V 3 GPIO02 SDA 4 5V 5 GPIO03 SCL 6 GND 7 GPIO04 8 GPIO14 GSM_DIN 9 GND 10 GPIO15 GSM_DOUT 11 GPIO17 SIM800-PWRKEY 12 GPIO18 SIM800-RST 13 GPIO27 14 GND 15 GPIO22 16 GPIO23 17 3.3V 18 GPIO24 19 GPIO10 SPI_MOSI 20 GND 21 GPIO09 SPI_MISO 22 GPIO25 23 GPIO11 SPI_SCK 24 GPIO08 SPI_CE0 25 GND 26 GPIO07 SPI_CE1 27 ID_SD 28 ID_SC 29 GPIO05 30 GND 31 GPIO06 32 GPIO12 33 GPIO13 34 GND 35 GPIO19 36 GPIO16 37 GPIO26 38 GPIO20 39 GND 40 GPIO21