1. SD card interface works with FAT16 or FAT32 formatted cards. 3.3 V level converter circuit prevents damage to the SD card.
2. real-time clock (RTC) keeps the time going even if the Arduino is not connected. The battery backup takes many years.
3. included libraries and sample code for both SD and RTC that you can get started quickly. Prototyping area for soldering connections, circuits or sensors.
Specifications:
Size: 68x53x23mm (approx.)
Control voltage: 3.3 V
Battery: CR1220 3V
Scope of supply:
1x Data logger module
1x Lithium cells
1x Compatible Arduino Uno R3 Board
1x USB cable
Datasheet
Shenzhen Harztec Technology Co., 309, 3F, Block B, Ganfeng Technology Building 1, No.993 Jiaxian Road, Xiangjiaotang Community, Bantian Street,, 518129 Shenzhen, China, [email protected], https://harztec.com