USB-RLY02 - 2 x 16A USB relay

Powered and Controlled from the USB bus.

Relays - 2
Power - Powered from standard USB bus 
Control interface - USB type B connector
Relay current - Up to 16Amp @24vdc or 250vac 
Connections - Screw Terminals for N/O N/C and Common contacts.

You may want to consider the newer USB-RLY02-SN that features a mini B USB connector and has integrated snubbers on the normally open terminals.


£28.30 £23.58
  • Buy 5 for £25.72 £21.43 each and save 9%
  • Buy 25 for £23.39 £19.49 each and save 17%
  • Buy 100 for £21.25 £17.71 each and save 25%

Full USB-RLY02 Documentation 

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

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

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