SPECIFICATION
On-board BLE chip: TI CC2540
Wireless Programming Via BLE
Support Bluetooth HID
Support AT command to config the BLE
Transparent communication through Serial
Upgrade BLE firmware easily
DC Supply: USB Powered or External 7V~12V DC
Microcontroller: Atmega328
Bootloader: Arduino Uno
Compatible with the Arduino Uno pin mapping
Size: 53x19x12mm(2.09x0.75x0.47")
Weight: 20g