Make your SD application more easier and simple. It is easily interfaced as a peripheral to your arduino sensor shield module. Through programming, you can read and write to the SD card using your Arduino. Can be used for SD Card more easily, such as for MP3 Player, MCU/ARM system control. With all SD SPI Pins out: MOSI, SCK, MISO and CS ,for further connection. Input Voltage: 3.3V/5V