[GreenKeys] RS232 to/from current loop converters available on epay

[Dave Horsfall]

On Sat, 3 Feb 2018, Jerry Murphy wrote:

> Black Box CL050A signal converters are available on that popular 
> internet auction website.

Good grief; is Black Box still around?  I remember drooling over their 
catalogues, and wondering what on earth that thing was, and where the heck 
would you use it...  But hey, it looked impressive!

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."