2G/SMS/BT SIM800C GSM/GPRS Expansion Board for Raspberry Pi 4th Generation B/3B+/Z, SIM800C Raspberry Development GSM Core Board

● Support AT command control (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT command set); ● Support SIM application kit: GSM 11.14 Release 99; ● Provide complete supporting information manuals (Sample programs such as Raspberry/Arduino/STM32); GSM/GPRS parameters Frequency band GSM 850/EGSM 900/DCS 1800/PCS 1900 MHz Support automatic search for 4 frequency bands Meet the GSM phase 2/2+ standard Transmit power Class 4 (2W @ GSM 850/EGSM 900 MHz) Class 1 (1W @ DCS 1800/PCS 1900 MHz) GPRS connection characteristics GPRS multi-slot class 12 (default) GPRS multi-slot class 1~12 (configurable) GPRS data characteristics Uplink/downlink transmission rate: ≤85.6kbps Support packet broadcast control channel (PBCCH) Coding format: CS-1, CS-2, CS-3, CS-4 Support PAP protocol (password authentication protocol) for PPP connection Support Unstructured Supplementary Data Service (USSD) Text message (SMS) Support type: MT, MO, CB, Text, PDU SMS storage device: SIM card Bluetooth parameters Integrated AT command control Compliant with Bluetooth specification3.0 + EDR Support SPP, OPP, HFP/HSP and other functions Other parameters Power supply voltage: 5V (USB port or pin header access) Logic level: 5V / 3.3V (default is 3.3V) Working temperature: -40°C ~ 85°C Storage temperature: -45°C ~ 90°C Product size: 30.2mm x 65mm