I got mine today also. I'm picking up the NGK plug from Advance Auto Parts tomorrow morning.The inverter arrived this afternoon. That was quick. Here is the box:
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It's definitely smaller and lighter than the other inverters. To my surprise, it does indeed have the CO detector. I don't recall that being mentioned on Wal Mart's product page.
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Overall, it seems like a nice, solid little unit. I'm waiting for the NGK plug to arrive before I prep it to run. I'll put it on the meter and the scope when I get it powered up.