USB-OPTO-RLY816

• Number of Isolated Inputs - 8
• Input Voltage - 4.5v DC to 27v DC
• Number of Relay's - 8
• Power - 12V DC adaptor, supplied separately.
• Control interface - USB
• Relay current - Up to 16Amp @24vdc or 250vac
• Connections - Screw Terminals for N/O N/C and Common contact

Full documentation: Here