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【One-click switching interface】Choosing from 5 button to quick access different parameters. Press M to display KWH and electricity cost. Press + to display Watt (active power) and VA (apparent Power). Press OK to display true RMS voltage Vrms and true RMS current Arms. Press – to display Hz ( frequency) and PF (power factor). Press ↺ to display the maximum and minimum power. Press OK for 3s to display the complete accumulated time.
【Monitor home appliances】Insert the watt meter between the appliance and the power outlet. This energy meter will measure the power consumption of the appliance and automatically calculate the electricity bill, only being calculated if the appliance is running at a power greater than 2 watts. Suitable for computers, games consoles, printers, TVs, refrigerators, washing machines, dryers, routers, etc.
【Multiple protection】When the load power exceed the overload setting value, power consumption exceed KWH alarm setting value, electricity cost exceed cost alarm setting value, LCD displays “Overload”, “KWh ALARM” or “COST ALARM” and LED light flashes continuously to warn user. The default overload power is 3680W ( 0~3680W adjustable ). In general, you need to set the overload power to 1800W before using. Ideal for monitoring the energy consumption of household appliances.
【Data storage】The power consumption monitor plug has a built-in high-precision chip that stores data in the event of a power failure. It has a reset function and a function to delete measurement data but retain setting parameters for switching between multiple appliances. It can effectively monitor the electricity consumption, reduce electricity bills and save energy.
【Upgraded LCD display】Wide viewing angles is great for reading and recording the data in any angles. No need to stand on the front of the display and bend over to read the numbers, especially if the energy meter is not at eye level, or is only viewable from an angle.
13 reviews for KETOTEK Watt Meter Power Meter Plug Electricity Usage Monitor for Home, Energy Monitor with LCD Display, Kilowatt Meter Socket Outlet, Voltage Amps Power Consumption Meter, Overload Protection
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Original price was: $17.99.$16.19Current price is: $16.19.

KeithLauhinghouse13 –
Good bang for the buck.
Nice, solid, quality product.Checks to see how much power a product uses, if it drains power while off, etc. Cool tool.
L in Lancaster –
More than meets the eye, great deal, great product.
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.
N. A. Carlson –
Works nicely as advertised
I bought the Ketotek meter and a similar-price Suraielec meter to compare them. The Ketotek is easy to use, and has nice-sized buttons for switching between modes. All the functions worked as advertised. I did not test for accuracy against a known reference, but the voltage was 120 +- 0.2 as expected. All other measurements looked reasonable for our toaster over. I especially liked how easy it is to reset the cumulative kWh and time data. The back-lighting makes the data very easy to read. The bak-lighting stays on longer than necessary, but does eventually turn off automatically. It comes on again when the user pushes one of the display buttons. The Suraielec has smaller buttons, and is difficult to reset. (You have to stick a paper clip into a small hole to reset the cumulative kWh data.) The Suraielec back-light turns off after about 20 sec. Push any button to turn it on again.Note: after my original review (now edited), I found that the Ketotek back-lighting turns off automatically after several minutes. Hence I raised my rating from 4-star to 5.
Michael R Martin –
Easy to use, Lighted Face, Stores Total usage
I use this meter to monitor the charging of my electric car. I use a type 1 charging cable. 120volts.This 120 volt/watt meter is great. It is easy to operate.This meter tells me what I need to know.I can monitor the line voltage, charge current and total watts/kilowatts of charge in real time.The meter face it lighted initially and stays lit for a few minutes. Push any button to light the meter face.The meter holds it’s total kilowatts reading even after unplugged.I can keep track of the kilowatts used to charge my car.
team W –
Seems to work just fine, wish the display was backlit.
I bought this to monitor the energy use/duty cycle of a small space heater I use for supplemental heat. It seems to work fine and the wattage draw appears consistent with what I’d expect to see.I like that, with a little bit of fiddling, you can put in your current, local kwh cost and have it do the math for you automatically so you can see total cost over time. You don’t really need that, but it is convenient.What don’t I like? That the display isn’t backlit. There is a small blue light that turns on when power is running through it, but you will need to supply enough light to read it, which turns out to be somewhat inconvenient given that most outlets are not exactly at eye level. If I were improving this product I’d make the display bigger, add a backlight that could be turned off, and angle the display slightly so when it is plugged into a normal outlet it is easier to see when looked down on from above.But overall, it seems fine, and I’m not unhappy I bought it over the much more expensive name brand one we’ve all heard of.
SteveL109 –
saved me from having to get my Onan 5500 RV generator professionally adjusted.
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
TJB –
I use this to help putting up Christmas decorations, not to overload a circuit.
Bought this to help me calculate actual wattage for running Christmas decorations and not to overload circuit power.It measures incoming 110-120 ac power.Actual amperage being used by device plugged into it and other electrical information that you may need.I find that the wattage being specified by the manufacture is not always correct as stated on the box/item you are buying.
Rick S. –
Just as described
Easy to understand and use. It showed me my 30 year old refrigerator was just as efficient as a new one.
Gabriele –
Ottimo prodotto, funzionale ed intuitivo. Non ho avuto modo di calibrarlo per verificare se le misure sono attendibili, ma anche dal confronto con un altro misuratore almeno sembrano coerenti.
Ivica –
Jag kan rekommenderas till alla
Pablo Fernandez Castro –
Funciona a la perfeccion
Peter Lopushinsky –
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.
Dlanor –
Hele fijne meter om vrij snel het verbruik van een apparaat te meten. Ook voor een langere periode is geen probleem. Zo ontdekte ik dat ik een sluipverbruiker net onder mijn tv had. Het was de speakerset. Die ging nietmeer in diepe slaap. De meter heeft een mooi duidelijk display.