*Supported board:Arduino UNO board

*Buttons:Four round buttons, 2 small buttons

*Working voltage:3.3V or 5V eg. STM32

*Interface:nRF24L01 RF, Nokia 5110 LCD, Bluetooth

module, I2C communication

*Modules:USB to TLL, Power Modules,RS232 TO TLL

*Pack Size:15cm x 12cm x 3cm”