The IA-3308-U is tiny and intellgent 8 relays module, Powered and Controlled by any USB port. On up to 2 relays the N.C contact may be chosen as a relays output instead of the N.O contact, by an internal jumper.
The common line is shared between each 2 relays, to ease the wiring eforts.
The IA-3308-U is one of the IA-33XX Tiny modules series, providing 8 relays, with powerhandling of 2Amp @ 30VDV, while statu of each relay is localy displayed and may be easily set by suplied software.
The module is software compatible to the IA-series.