[GreenKeys] black box loop - 232 interface question

[Paul A. Pennington]

wa2hwj said:

> It is suited for a Model 32/33 type of LV loop circuit (no more than 
> 30VDC).

    I do have a Model 33, but the seller's auction seems to have disappeared 
from eBay.  Could someone please post his actual email address?  (And, if 
anyone wants to sell theirs, email me off-list).

    Paul Pennington
    Augusta, Georgia