SIM800A Development Board GPRS/GSM Industrial Dual Frequency Nano SIM Card Supports 4G

Introduction SIM800A Nano development board is a high performance industrial grade GSM GPRS module with a rich interface perfect function stable operation strong anti interference high integration of peripheral circuits and small size It is especially suitable for various fields that require voice SMS GPRS data services such as smart home intelligent collection system remote monitoring and so on Features Support dual band GSM GPRS 900MHz 1800MHz Support RS232 TTL serial port supports 3 3V 5V system Support 5V 18V power supply 9V1A power supply is recommended Reserved voice interfaceReserve SMA and IPX interfacesSupport SMS service MT M0 Text PDU modeSupport TCP UDP communication FTP HTTP serviceSupport Nano SIM cardPin description PWR Positive power supplyDTR DTRRI RI output pinRES reset footM Mic M Mic S horn positiveS horn negativeGND power groundBAT Lithium battery power supply interfaceEN Power enable default highVCC IN external power inputTXD TTL serial outputRXD TTL serial inputV MCU Level matching interfaceR 232 RS232 serial inputT 232 RS232 serial output SIM800A Chip Main Characteristics Two frequency 900 1800MHzGPRS multi slot class 12 10GPRS m0bile station class BMeet the GSM 2 2 standardClass 4 2W 900MHz Class 1 1W 1800MHz Size 24 24 3mmControlled by AT c0mmands GSM 07 07 07 05 and SIMCOM enhanced AT c0mmand set Supply voltage 3 4 4 4VLow power consumptionOperating temperature 40C 85C Data Transmissio