USB-RLY08B - 8 channel USB relay

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-B is an update of the obsolete USB-RLY08. It uses a different USB driver, otherwise is a drop in replacement.

Excl. VAT: £39.99 Incl. VAT: £47.99
  • Buy 5 for £36.35 (£43.62 incl. tax) each and save 10%
  • Buy 25 for £33.05 (£39.66 incl. tax) each and save 18%
  • Buy 100 for £30.05 (£36.06 incl. tax) each and save 25%

Product data and examples


Full USB-RLY08-B 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


Customer Reviews (1)

Great valueReview by Stefan
Im using this card in a battery test system. Integration with python is really simple. Small and works great (Posted on 15/09/2016)

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Product Tags

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.