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Powered and Controlled from the USB bus.
The relays used on this board are premium ultra low power 50mW coil types, this means the boards current consumption is less than 100mA with all relays on.
Relays - 8
Power - Powered from standard USB bus
Control interface - USB
Relay current - Up to 1Amp @30vdc or 60vac. 500mA@110vac. 250mA@250vac
Connections - Screw Terminals for N/O N/C and Common contacts.
The USB-RLY08-C is an update of the obsolete USB-RLY08-B. The only change is an improved USB footprint on the PCB to allow correct seating with multiple manufacturers, otherwise is a drop in replacement.
Full USB-RLY08-C documentation
Examples:
Linux
Linux GCC - A command line tool that will set the relay states according to input from the user
Linux with Mono and Xbuild (C#) - Simple example of switching the relays
Mac
Xcode - Simple example of switching the relays
Microsoft Windows
Visual C# Express - Simple example of switching the relays
Visual Basic Express - Simple example of switching the relays
