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 interface Reserve SMA and IPX interfaces Support SMS service MT/M0/Text/PDU mode Support TCP/UDP communication, FTP/HTTP service Support Nano SIM card Pin description: PWR: Positive power supply DTR: DTR RI: RI output pin RES: reset foot M+: Mic+ M-: Mic- S+: horn positive S-: horn negative GND: power ground BAT: Lithium battery power supply interface EN: Power enable, default high VCC_IN: external power input TXD: TTL serial output RXD: TTL serial input V_MCU: Level matching interface R_232: RS232 serial input T_232: RS232 serial output SIM800A Chip: Main Characteristics: Two-frequency 900/1800MHz GPRS multi-slot class 12/10 GPRS m0bile station class B Meet the GSM 2/2+ standard Class 4 (2W @900MHz) Class 1 (1W @1800MHz) Size: 24*24*3mm Controlled by AT c0mmands (GSM 07.07, 07.05 and SIMCOM enhanced AT c0mmand set) Supply voltage: 3.4 ~ 4.4V Low power consumption Operating temperature: -40C ~ +85C Data Transmission: GPRS class 12: Maximum 85.6 kbps (downstream rate) Support PBCCH Coding schemes CS 1, 2, 3, 4 PPP-stack CSD up to 14.4 kbps USSD Non-transparent Software Features: 0710 MUX protocol Embedded TCP/UDP protocol FTP/HTTP MMS e-mail DTMF detection Interference detection recording SSL Bluetooth 3.0 (optional) Package includes: 1 x SIM800A Development Board