Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Will this work with two prong (non-grounded) outlets?
Document: I have to take off 1 star because the device created a situation which maybe could have burnt my house down and definitely could have electrocuted me if I were to have contacted the prong hanging out of the outlet while being grounded.
A great product, very accurate, and I love being able to check the power factor of non-linear and inductive loads.One complaint...if your outlets are too close to the floor, or upside down, it can be a pain to plug-in...especially if the outlet is behind a desk (though a short extension cord can fix this).
Product performed as advertised. I would suggest that it be used with a very short 3 prong extension cord. There is insufficient room on my electrical outlets to mount the Kill-a Watt.
Execllent little device. Does just what it says it will do, and gave me exactly the information I was looking for.The location of the three-prong plug on the back side is a little high, making it so the meter takes up the whole outlet (both plug outlets), but that is not enought of a problem to be anything more than a mere inconvenience. 5 stars.
I bought this for an environmental science class, it was for our final project. I honestly B.S. the whole thing, and have no idea how this works. But it gave me numbers non the less and I passed so it must work as it should, follow the directions for desired result.
(It's also got a ground plug, so you can't plug it directly into an older-style two-prong outlet, but grounding is a good thing, so I can't complain.)2.
When I first used it (without reading the instructions, of course) I thought everything was using 120 watts. It didn't take me more than two tests to figure this out, but still, wattage should have been the standard read-out.My other complaint, is that when plugged into the top receptacle of a standard 15amp, three-prong outlet, the bottom of the device is so long, that you have to unplug the bottom plug.
It is also true that it will occupy the space of two outlets (or more on a power strip) while only using one.
Overall nice item. The biggest negative is that it defaults to volts when you first plug it in and that it can block two or more outlets. A nice 12 gauge pigtail cord version may be nice.
Does everything I expected. Two small improvements: A backlight would be useful; When you plug it into a standard double outlet, the case covers both outlets. reposition the plug on the back so the device only covers the outlet in use.
Answer: yes