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: Does this device work with 240 volt supply?   Also do Amazon ship to New Zealand?   If so what is the cost
Document: It even led me to learn some new concepts about phase shift in AC circuits. My son-in-law, an electrician, gave me a short tutorial. Phase shift, power factor, and the difference between watts and volt-amps get interesting if you need to determine how much capacity you need in an Uninterruptible Power Supply. However you don't need to understand all this to understand what makes the kilowatt-hours add up on the electric bill.
This thing seems to work as advertised. Very helpful to determine how many Watts to shop for when buying a new power supply for my gaming computer.
This seemed to be a good item, It performed well for few months of use. Then I pluged in a wet vac to check the amp draw and it went blank.I emailed the company about a replacement as it was only 9 months old. they stated the warranty is six months, I could ship it to then and pay $15 and recive a new unit. On the Amazon site it shows one year warranty.
I bought this to measure the Kwh to charge my new plug-in car. But after 3 weeks, it just stopped working--blank screen. It also prevented electricity from flowing to the car. Thankfully, I was still within the Amazon return window. I'll have to research for a more reliable meter.
If you want to find out just how much electricity that new PC is using, in real time, then this monitor works great. I see mine is 135w now, but only 35 when in sleep mode.The monitor just plugs into a grounded wall socket and then you plug in the device to be measured. (My UPS power supply even let me do this without turning off the computer.) Because the unit is fairly large, tight spaces or crowded plugs may be an issue.
Works as intended. I have used it daily with no problems. I do wish I could measure 240 volt curcuits though
This device is great. It's relatively cheap (far cheaper than anything similar I've seen out there) and it does exactly what they say it does. It's very useful to know how much power the major devices in your home are using. For example, I had no idea that my computer was drawing 200W at IDLE, so now I know that I should upgrade my power supply to a more efficient one.Rave reviews aside, the design of this device could certainly use some work.
I find these quite handy, and cost effective (seemingly especially here on Amazon). I read a lot (in other reviews) that they don't hold up well, but so far... (knocking on wood), mine have been used at length with no issues...  And, I suppose for the cost, if they don't go forever, they can be replaced. As I'm also able to verify some of the measurements other ways sometimes, I also find them to be accurate.
It's a great product at such a reasonable price! I'm so glad P3 International brought this product to the market.Caveats:  It loses all data if it's unplugged or the power goes out. You'll need a small extension cord to monitor some appliances (like a refrigerator) so you can read the display. It won't handle 240 volt outlets so you may not be able to monitor those appliances (for me it's the clothes dryer and electric stove).
It seems that everyone is trying to cut their power usage, and I'm no exception. This little device is about as simple to operate as it gets. Just plug it in and let it work for a day or so. It gives you all the electrical data you can use and with a spreadsheet and your utility bill, you can quickly see which appliance is hogging the meter.Be warned, however, that the Kill A Watt will not work on your 220 volt appliances like water heaters and dryers.
Answer: yes