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GSM A6 GPRS GSM With Antenna (SIM900 Replacement)

GSM A6 GPRS GSM With Antenna (SIM900 Replacement)

This serial GSM GPRS core development platform is based on the AiThinker A6 module and is designed for reliable cellular communication in embedded and IoT applications. It supports dual-band GSM GPRS networks and enables SMS messaging, voice calls, and GPRS data transmission over the internet. The compact PCB design and optimized power management enable low-power operation, with a sleep current reduced to a few milliamps. Communication with a microcontroller is handled through a UART serial interface, supporting standard GSM 07.07, GSM 07.05, and AiThinker extended AT commands, making it suitable for development, testing, and integration into custom projects.

Package Includes

  • 1 x A6 GSM GPRS Core Development Board

GSM Board
51.45 AED 51.45 AED (Tax included)

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Features

  • Quad band GSM GPRS network support at 850, 900, 1800, and 1900 MHz
  • Supports voice calls using headset and electret microphone
  • Send and receive SMS messages
  • Send and receive GPRS data including TCP IP and HTTP
  • Low power sleep mode for power sensitive applications
  • UART serial communication with microcontrollers
  • Supports GSM 07.07, GSM 07.05, and AiThinker AT commands
  • Onboard Micro SIM card holder
  • Onboard Micro USB connector for external power supply
  • TTL serial and RS232 serial communication support
  • Onboard SMA and IPX antenna connectors
  • Designed for testing and development with the AiThinker A6 module

Specifications

  • Working frequency: 850, 900, 1800, 1900 MHz
  • Working voltage: 4.89 V DC via onboard voltage regulator
  • External power input range: 3.4 V to 4.2 V
  • Maximum working current: up to 2 A
  • Sleep current: approximately 5 mA
  • Standby current in low power mode: less than 1 mA
  • Baud rate: 115200 bps, configurable via AT commands
  • Logic level voltage: 3.3 V
  • Pin pitch: 2.54 mm

Antenna Specifications

  • Compatible with GSM GPRS shields and modules
  • Frequency range: 780 MHz to 960 MHz and 1710 MHz to 2170 MHz
  • Antenna gain: approximately 2.0 dBi at 880 MHz and 1800 MHz
  • Standing wave ratio less than or equal to 2.0
  • Output impedance: 50 ohm
  • Antenna connector: SMA

Pin Description

  • EN: Module power enable control, active high
  • VCC_IN: External power supply input, maximum current 2 A
  • PWR: Power on or off control pin
  • INT: Low power mode control pin
  • GND: Ground reference pins
  • U_RXD: UART receive pin for AT commands
  • U_TXD: UART transmit pin for AT commands
  • H_RXD: Firmware update receive pin at 2.8 V logic
  • H_TXD: Firmware update transmit pin at 2.8 V logic
  • R232_RX: RS232 receive pin
  • R232_TX: RS232 transmit pin
  • MIC plus and MIC minus: Microphone input pins
  • REC plus and REC minus: Speaker output pins