ETHIO8I8O-I provides 8 digital contact channels to vådkontakt and 8 digital output channels. It has optical isolation to 2500 VDC with transient over-voltage protection, but does not provide channel-to-channel isolation. Each input channel can be used as a 32-bit counter, and each output channel can drive 650 mA load. Ignition value and ensure value for digital output channel is programmable. It can be safely used in applications where hazardous voltages.