Home > Arduino & SCM Supplies > SIM900
SIM900 Module Quad-Band GSM/GPRS Shield Board for Arduino
Adopts SIM900 quad-band GSM/GPRS module£¬ expands GSM/GPRS function for Arduino main control board; With this expansion board£¬ Arduino can send / receive messages as well as achieve GPRS data communication; - Switch on board for ports option: SIM900 serial port or SIM900 debug port; If choose Debug£¬ then you must use Arduino hardware serial port to control£¬ analog serial port is invalid; Farad capacitors on board are designed to supply power for RTC; - Toggle Debug switch£¬ can setup the SIM900 Debug port to connect to Arduino or setup it to connect to PC through the ATMEGA8U2/FT232 on Arduino; - 3.3V and 5.5V automatic level compatible£¬ self-adaptive to 3.3V or 5V main control boards£¬ supports development boards based on other 3.3V platforms£¬ such as leaf maple and Chipkit; - After connecting to the Arduino board£¬ you must use a 9V/2A DC power supply; Otherwise£¬ it can not work; - Quad-band supported: GSM/GPRS 850/900/1800/1900MHz (Supports China Unicom£¬ China Mobile; Not for China Telecom).