USB-RLY16-B - 8 x 16A USB relay

The USB-RLY16 provides eight volt free contact relay outputs with a current rating of up to 16Amp each. The processor is powered and instructed from any standard USB bus and the relay power is obtained by the DC power input adaptor. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 500mA at 12vdc. The relays are SPCO (Single Pole Change Over) types. The normally open, normally closed and common pins are all available on the screw terminals.

Operating Temperature
-40C to +70C

LED indication
The USB-RLY16 provides a red LED mounted immediately next to each relay to indicate whether it is in a powered state (LED on), there is also two LED's which will flash with USB transactions to and from the module, green indicating reception of data from the PC and yellow the transmission of data to the PC. Finally there is red power LED mounted near to the USB connector. 

Relay power rating
If the contact load voltage and current of the relay are in the region enclosed by the solid and dotted lines in the figure below, the relay can perform stable switching operation. If the relay is used at a voltage or current exceeding this region, the life of the contacts may be significantly shortened.

Board dimensions

Test program and example source code

To get the USB-RLY16 up and running in the minimum amount of time we have put together an example program to demonstrate the functionality of the module.  

Full USB-RLY16-B Documentation

Examples:
Linux
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