Sim900a GSM Module

SIM900A is a GSM module that function like phone. It can send a message, call a phone number and use GPRS to send data. Here’s the simple feature taken from it’s datasheet :

• Quad-Band 850/ 900/ 1800/ 1900 MHz

• Dual-Band 900/ 1900 MHz

• GPRS multi-slot class 10/8GPRS mobile station class B

• Compliant to GSM phase 2/2+Class 4 (2 W @‌850/ 900 MHz)

• Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands)

• Low power consumption: 1.5mA(sleep mode)

• Operation temperature: -40°C to +85 °C