Specifications:

• SIM900 module is designed with a powerful single-chip processor with AMR926EJ-S core
• It is a Quad-band GSM/GPRS module with 24mmx24mmx3mm size.
• It is available in SMT type & suitable for customer applications.
• An embedded powerful TCP/IP protocol stack.
• Quad-band 850/900/1800/1900 MHz would work on GSM networks within all countries around the world.
• It has multi-slot GPRS class 10/8, class B GPRS mobile station
• This module is compliant with GSM phase 2/2+.
• It can be controlled with AT commands.
• It has an embedded TCP/UDP stack that allows you to upload data to a web server.
  Its weight is 3.4g.
• It controls via AT commands.
• Its voltage supply ranges from 3.4V to 4.5V.
• It has less power consumption-1.0mA.
• Operation temperature ranges from -40°C to +85 °C.
• It supports Quad band like; 850/900/1800/1900MHz.
• It is compatible with Arduino.
• Full control through AT commands set like; Enhanced – SIMCOM AT Commands & Standard GSM 07.07 and 07.05.
• It supports TCP/UDP protocols.
• Its power consumption is low – 1.5mA (sleep mode).