✍ GPRS module is a breakout board and minimum system of SIM900A Dual-band GSM/GPRS module. It can communicate with controllers via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands). This module supports software power on and reset.

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▼ Features

• Based on SIMCOM SIM900A chip
• Dual band GSM/GPRS module
• Serial port circuit with protection
• Control via AT command
• SMS text or PDU mode
• Signal and RING LED indicator.
• Compatible with ARDUINO, RASPBERRY PI, ARM, AVR, PIC, 8051, etc.
• Can be directly connected to computer via Serial Port (Use GSM Tester or write your own Software)
• Best suited for GSM based Microcontroller Projects (better than SIM300 and other GSM Modems)

▼ Specifications

• Rated operating voltage: 5V DC
• Low power consumption: 1.5mA (sleep mode)
• Dual-band: 900/1800 MHz
• Default baud rate: 9600bps
• Embedded TCP/IP stack
• GPRS multi-slot class 10/8
• GPRS mobile station class B
• Meet GSM 2/2 + standards
• Class 4 (2 W @ 900 MHz)
• Class 1 (1 W @ 1800MHz)
• Controlled by AT commands(GSM 07.07, 07.05 and SIMCOM enhanced AT command set)
• Antenna interface circuit (SMA bend female port)
• SIM card circuit (Flip SIM slot)
• Operating temperature range: -40 ° C to +85 ° C.
• Size: 24 x 24 x 3 mm
• Weight: 26g
• 4 * 3.5mm fixture hole

▼ Package Included

• 1 x SIM900A
• 1 x Power Cable
• 1 x Antenna

▼ Pinout

• VCC5 = 5V supply in
• GND = Ground
• 3VT = TXD (Output, 3.3V)
• 3VR = RXD (Input, 3.3V)
• 5VT = TXD (Output, 5V) : Connect this pin to Arduino receive pin
• 5VR = RXD (Input, 5V) : Connect this pin to Arduino transmit pin
• VCC = Unuse
• GND = Ground
• DB9-2 = RS232 TX (Output)
• DB9-3 = RS232 RX (Input)
• GND = Ground