I²C Bus
I²C (Inter-Integrated Circuit) is a synchronous, multi-controller/multi-target bus used for communication between sensors, chips, etc.
SPI Interface
A Serial Peripheral Bus (SPI) is a synchronous serial bus. It’s used for fast interconnection of the peripherals inside the device. TOWER uses SPI for example in the LCD Module.
UART Interface
UART or Universal Asynchronous Receiver-Transmitter is an asynchronous communication interface used mostly to transfer serial data between devices. It uses only two channels RX (receiver) and TX (transmitter) to send data, you don't need to connect any clock signal.
USB Interface
USB connectivity options for the HARDWARIO TOWER Core Module, Radio Dongle, and Bridge Module.
1-Wire Bus
1-Wire is a serial bus that uses only two wires for half-duplex bidirectional communication with multiple 1-Wire slave devices.