the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice,SMS, Data, and Fax in a small form factor and with low power consumption. With a tiny configuration of 24mm x 24mm x3 mm, SIM900 can fit almost all the space requirements in your M2M applications, especially for slim and compact demands of design.

General features
Quad-Band 850/ 900/ 1800/ 1900 MHz
GPRS multi-slot class 10/8
GPRS mobile station class B
Compliant to GSM phase 2/2+
– Class 4 (2 W @850/ 900 MHz)
– Class 1 (1 W @ 1800/1900MHz)
SAIC (Single Antenna Interference Cancellation)
support
Dimensions: 24* 24 * 3 mm
Weight: 3.4g
Control via AT commands (GSM 07.07 ,07.05 and
SIMCOM enhanced AT Commands)
SIM application toolkit
Supply voltage range : 3.2 ... 4.8V
Low power consumption: 1.0mA(sleep mode&BS-PA-
MFRMS=9 )
Operation temperature: -40 to +85

Specifications for Fax
Group 3, class 1

Specifications for GPRS Data
GPRS class 10: max. 85.6 kbps (downlink)
PBCCH support
Coding schemes CS 1, 2, 3, 4
PPP-stack

Specifications for CSD Data
USSD
Non transparent mode

Specifications for SMS via GSM/GPRS
Point to point MO/MT
SMS cell broadcast
Text and PDU mode
Software features
0710 MUX protocol
Embedded TCP/UDP protocol
FTP/HTTP

Special firmware
Embedded AT
Java (cooperate with Iasolution)
FOTA
MMS

Specifications for Voice
Tricodec
– Half rate (HR)
– Full rate (FR)
– Enhanced Full rate (EFR)
AMR
- Half rate (HR)
- Full rate (FR)
Hands-free operation
（Echo suppression）

Interfaces
Interface to external SIM 3V/ 1.8V
Analog audio interface
RTC backup
SPI interface (option)
Serial interface
Antenna pad
I2C
GPIO
PWM
ADC

Compatibility
AT cellular command interface

Certifications:
CE
FCC
ROHS
PTCRB
GCF
IC
ICASA
REACH
 
Carrier Approvals:
NCC
Anatel
Rogers
Orange
AT&T
Vodafone