Description: SD card interface with FAT16 or FAT32 paper size. 3.3 v circuit level converter to avoid damaging the SD card Real-time clock (RTC) keeps time, even when Arduino is disconnected. Years of replacement batteries Including the SD card and the RTC library and the sample code means that you can get fast Welded joint, circuit area or prototype design sensor. Built-in 3.3V reference voltage regulator is a reliable and can be reliably run, which require a lot of power to run the SD card Compatible with Arduino UNO, Duemilanove, Ten Thousand, Leonardo or ADK / Mega R3 or higher. ADK / MEGA R2 or lower is not supported. Package Includes: 1 pcs data recording form module