SIM900 is an SMT module and has a complete Quad-band GSM or GPRS solution. It can be directly embedded in any application. It is a GSM compatible cell phone, works on the frequency of 850, 900 1800, or 1900 MHz It can be used for internet access, oral communication, and SMS. AMR926EJ-S processor manages the module and controls phone and data communication.
Specification
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)
Dimensions: 48.5* 50 * 13 mm
Weight: 3.4g
Control via AT commands (GSM 07.07, 07.05 and SIMCOM enhanced AT Commands)
SIM application toolkit
Supply voltage range: 3.4 … 4.5 V
Low power consumption
Operation temperature: -30 °C to +80 °C