Watt Power Meter Plug-in Socket Power Meter, Home Electrical Usage Monitor Consumption, Kilowatt Wattage Voltage AMP Tester with Backlight Overload Protection

I use it primarily to see how much power my devices are using. It also measures current, voltage frequency, kWh used and co2 emissions. Plus it has a backlit display so it's easy to see the screen.

Works great. Nice quality. Fast shipping.

Don't waste your money on this kilowatt meter. It is advertised as a 220v meter. The side you plug into the wall only works on a 110v plug, however the other side of the kilowatt meter will allow you to plug in a 220v male plug. This is so insanely stupid since the input side will only handle 110v.

I got this to monitor the power consumption of an appliance with a nema 5-20 plug. The contacts in the receptacle do not make contact with with the horizontally oriented blade of the nema 5-20 plug. I had to slightly modify the contacts by bending them to make contact but can't recommend others to attempt this as it is a fire hazard if not done properly. The receptacle worked fine with a standard 120v plug (nema 5-15). It will also not work with a nema 6-15 plug due to the same issues with the nema 5-20 plug. I live in the usa and can't test it with other international plugs.Tldr: works great with standard 120v plugs doesn't work with any other plugs found in the usa without potentially hazardous modifications to the socket to make proper contact with the blades of the plug.

It does measure power and voltage quite well. The screen is easy to read as long as it's not in sunlight. And it works with high power outlets and international plugs, which many similar products don't. But its physical form factor is poorly built. It only fits into an outlet one way, and covers a large area around the outlet (e.g. the other plug in a dual outlet). In some places where I used it (measuring under the sink where a hot-water heater is plugged in) it could only be read upside-down. It would have been much better if it just came with a 6-inch extension cord between it and the power source. Then it would plug in anywhere, and the display orientation would be de-coupled from the plug orientation. If you want to use it outside the US, realize that the plug on the back of it is a 3-prong US plug, so you'll need a separate adapter to adjust it to the local outlets. The outlet on the front of it handles a myriad of different international plugs.

It worked perfectly fine, got no complaints! Does everything it tells you it can do

First - it seems to be very accurate and is one of few, if any, that allows for a large number of US and International standard plugs.However, with only a NEMA 1-15 plug, you'll have to have another converter to get back to your 220v or other sockets.My only issue, and I did send back one that didn't work is that, for the US standard plugs - because they have so many plug options, the internal 110v connectors are, in my opinion, too small to carry the rated 15a load for any sustained period of time.Specifically, my <15a load heated one of the connectors which softened the plastic support which then allowed the connector to move away from where the plug was entering the device. The replacement is now moved away from the wall outlet and away from the device and is probably more thermally isolated now.

It was the only option I could find on Amazon US that supported 220v. It does the job it's supposed to do, but the design is terrible.Why the US plug? I understand it's a US store but as far as I know the US plug isn't used with 220v. No problem, I used an adapter. Also, the way it's oriented forces me to plug it in upside-down.The way the UK style plug is connected forces the cable in front of the screen. See the picture above. Hilariously, the instruction manual and some of the pictures on the item description show it facing the "correct" position.In short, I needed an adapter to plug it in, had to plug it in upside down, and the plug for what I'm measuring can only be plugged in so that it obscures the screen. Otherwise, it performs the power meter function just fine...