Quote Originally Posted by irving2008 View Post
The problem I have with running this BOB at 24v is this:

Click image for larger version. 

Name:	bob.gif 
Views:	862 
Size:	117.8 KB 
ID:	6875


The output circuit has a pull up to 'Isolating + supply'. Without knowing the value of that resistor you can't be 100% sure its not going to fry. In the manual it shows 'Isolating Supply +5v'so I would assume they are sized for 5v and not 24v supply...
They are 1K.