he GPRS/GSM Shield provides you a way to use the GSM phone network to receive data from a remote location\u010f\u017a\u0152and it is compatible with all boards which have the same form factor (and pin out) as a standard Arduino Board. This shield can also be applied to DIY phones for calling, receiving and sending messages, making GPS tracker or other applications like Smart home etc. S
IM900 GPRS/GSM Shield delivers GSM/GPRS850/900/1800/1900MHz signals for Audio, SMS and GPRS Service. Besides it is configured and controlled via its UART using AT commands with 6 GPIOS, 2 PWMS and 1 ADC(They are all 2V8 logic) which can be controlled by AT commands of Controller. Also, it runs at low power consumption of about 1.5mA in sleep mode but acts compliant to GSM phase 2/2+: Class 4 (2 W @850/ 900 MHz), Class 1 (1 W @ 1800/1900MHz) with two-in-one headset jack. W
hat’s more, to make your project more flexible and efficient,we have prepared two different antennas for you. One is the traditional GPRS antenna which is more sensitive while another one is on-board antenna which is more compact and easy to install.
Here shared one of the applications of this product, you can have a browse and learn the details of this Shied in the Instructables