Description: ARDUINO OPTA LITE, Packaging: Bag, Display Type: No Display, Mounting Type: DIN Rail, Voltage - Supply: 12 ~ 24VDC, Number of Inputs and Type: 8 - Digital/Analog, Number of Outputs and Type: 4 - Relay, Communications: Ethernet, Modbus, RS-485, USB, Expandable: Non-Expandable.