The IA-3308-U is an Industrial Relay Controller with a contact rating of 2Amp @ 30VDC.
The relays are wired for SPST use, but there is an option to use the NC (Normally Close) contact instead of the NO contact, on up to two relays.
The IA-3308-U is powered and controlled by its USB port, and is software compatible to the IA-3000 Series.
The default communication speed is 19200bps, to fit other IA-3000 Series modules, but it can be easily set to much higher speed values of up to 230400bps.