Oh boy, anther thread costing me money. I wasn’t tracking this thread, seen it in the past when it was reported in the past that Doug was no longer making any DMMCHECK pluses, so I figured I missed out and wasn’t all that interested in the cheap Chinese modules with far less features. So right after reading here that a limited run was happening, I immediately went to his site, and saw “out of stock”, dam figured I missed it again. Went back today to write and confirm the run was over, but saw it in stock, placed my order!
I wrote Doug today, heard back quickly, and he said using a 9 volt lithium battery should be no issue. I don’t like to use any leaky alkalines. Thanks to all for the heads up, not often you get a 3rd chance at a good custom product.