Features: New RFID module and RFID keychain and white card.
Added DS1302 clock module.
New of the sound detection module.
New temperature and humidity module.
New water level detection module.

Specifications: Material:PCB
Size:As Picture Shown
For R3

Package Includes: 1Set Basic Starter Kit

note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.
②.Due to the difference between different monitors, the picture may not reflect the actual color of the item.
Thanks for your understandings.