KETOTEK Power Meter Plug Home Electric Usage Monitor Energy Monitor with LCD Display

I used this while running electric appliances while my kitchen was being rewired. Since they were all running on the same circuit, I had to be sure not to overload the circuit and this made monitoring the total amps being draw a cinch. And this seemed to fit the bill, it was cheap and looked good in the ad. It worked very well and was very convenient and as accurate as I could easily test it to be with my other meters. It would let me know if I was about to overload the circuit running the hotplate and the toaster oven at the same time, which saved me a bunch of walks out to the fuse box in the night. But, and this is a big one, it taught me a lot about the changing power usages of appliances as well as the rather poor power factor of some of my devices. I wound up learning a lot about the power usage of my kitchen gadgets. It gives some pretty technical information you might not understand if you don't have an electronics degree, but there's still lots of info there to let you know your power usage and costs of running an appliance. Highly recommended.

Edit: the company sent me a replacement unit and everything works beautifully. I have adjusted my rating to reflect the company's efforts to rectify the issue and I appreciate their customer service. My initial issue is still below but it has indeed been corrected and is no longer an issue. The + button does not work which is the button that shows the watts draw, the main reason I purchased the unit. This also prevents me from setting the costs and any of the limit alarms.

I needed something to measure the energy consumption of my heat pump this winter. This baby did it. Works great. Gives me all the info I need. Have also used it to measure the consumption of other appliances. Only criticism would be that it has no backlight for the display, so is hard to read in a poorly lit room. But I knew that when I ordered it.

love this unit. was having issues with my RV generator cutting off because it was revving too high and the frequency limit was reached. this unit allowed me to measure the frequency and set the unit to 60 hertz and now the system is running great. I can check voltage when running both AC units to make sure the generator is keeping up with demand, and if something is plugged into the unit, you can monitor amp draw and usage. very handy tool for RVers

Accurate and easy to use. I've measured various appliances around the house to see how to most efficiently heat my spaces. It turns out that my kotatsu is extremely efficient for staying warm throughout the day, and my oil-filled radiator is best at night. Good to know! The brightness is great when the backlight is on, and there's a little blue light that shines when electricity is in use. It's easy to reset and change measurement modes. Overall this little thing was a great purchase and is already saving me money on electricity.