I'm not sure whether this is a defect or a design flaw, but the one I bought, allegedly brand new, had no earthing protection and no simulated sine wave output. This means that if you're using a grounded appliance, you can get a shock, or you could wind up with equipment damage, but also because the output of the AC outlet isn't really a sine at all, it's a square wave, which is really pulsed DC, and will cause performance issues with a lot of appliances. This model is cheap, but that's because they didn't put any quality into it, and it's still a waste of money.
Verified purchase: Yes | Condition: New
Don't be fooled by the 3-prong outlet, there's no ground protection, no overload circuitry, and no GFCI at all. It's a cheaply-made chinese piece of trash.
Verified purchase: No
No safety features and no ground wire on the outlet.
Verified purchase: No
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