Overview
SIM900A GSM/GPRS Module is a dual-band module that works on frequencies EGSM 900MHZ and DCS1800MHz. It features GPRS multi-slot class 10/8(optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
SIM900A is designed with power saving techinique so that current consumption is as low as 1.0mA in sleep mode. It integrates TCP/IP protocol and extended TCP/IP AT Commands which are very useful for data transfer applications.
SIM900A Features
Frequency bands
Dual band 900MHz/1800MHz
Transmitting power
Class 4(2W) at EGSM900
GPRS connectivity
GPRS multi-slot class 10(default)
GPRS multi-slot class 8(option)
Temperature range
-30° ~ +80°
GPRS data
GPRS data downlink transfer: max. 85.6kbps
GPRS data uplink transfer: max. 42.8kbps
Coding scheme: CS-1, CS-2, CS-3 and CS-4
Integrate the TCP/IP protocol
Support Packet Broadcast Control Channel(PBCCH)
CSD
Support CSD transmission
SMS
MT, MO, CB, Text and PDU mode
Module Features
Commnunication Interface
RS232 port and TTL port
Support RTS/CTS hardware flow control
Support 1200bps ~ 115200bps
Antenna interface
SMA port
Power consumption
12 ~ 90mA@12V
Working with Arduino Uno
1. Tutorial for Arduino GSM.
2. Easyly connect to Arduino Uno: pin2 to TXD; pin3 to RXD, 5V to VCC_MCU and GND to GND.
