Your position: Home / Arduino / Arduino shield

Keyestudio SIM900 GSM GPRS module shields for Arduino UNO and Mega / Leonardo wireless module with extension wire

    Please select the information you wantX
(842 available)
Shipping Cost:
Estimated Delivery Time:
Please select the country you want to ship from
  • Description
  • Reviews(13)



SIM900 GSM/GPRS shield is based on Quad-Band SIM900 GSM/GPRS module. It provides Aduino with GSM/GPRS function. This shield allows you to make voice calls, send SMS or make connections to the Internet network.

On the shield, there is a serial port toggle switch for you to select either software serial port or hardware serial port to be connected to GPRS Shield. If you choose software serial port, you need to use the Software UART; otherwise, you need to use the Hardware UART. The shield includes a high capacitor dedicated to RTC (Real Time Clock).

If you toggle the switch to DBG-Port, you can connect the port to Aduino or connect the port to PC by Aduino to proceed the debugging.



1. Auto-adaption to 3.3V and 5V main board, supports 3.3V platforms such as leaf maple and Chipkit;

2. After connecting the SIM900 shield to Aduino, 9V/2A DC power supply is needed. Otherwise, there may be malfunction;

3. Quad-Band GSM/GPRS 850/900/1800/1900MHz (Support 2G card of UNICOM, China Mobile, does not support Telecom card).

Shipping list:

1. keyestudio SIM900 GSM_GPRS Module Shield *1

2. Extension cable 22CM *1

For more details:



Average rating: 4.0 based on 13 reviews
Share your thoughts with other customers
Write a review
Product reviews can be carried out after the member login, please click here to login