Upgraded Watt Meter, Home Electricity Usage Monitor, Plug-in Socket Power Meter, Power Watt Voltage Amps Meter Tester, Overload Protection
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Availability:
Only 5 left in stock, order soon!
Arrives
Monday, Jul 20
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Features
- Electricity Usage Monitor:Meter Plug monitors the power,voltage,amperage, frequency,power factor,energy,cost,minimum and maximum power of an appliance.With 7 display modes,you can easily understand the various parameters of the appliance while it is working.This monitor is a killer appliance for high cost energy consuming appliances and helps you to reduce energy consumption and save money
- Overload Protection:Once the whole power exceeds the rated power of monitor,LCD will display "OVERLOAD" with booming noise to remind the user, you need to set the overload power to 1800W before use
- Data Memory Function:When you unplug the wattage meter from the socket or remove the appliance from the power monitor, the power meter will save your power consumption data.The next time you use it,you can directly see the last data.This function also saves the data automatically in the event of a sudden power failure
- Digital LCD Display:The voltage meter large,clear LCD screen provides a clear view of the data day or night.Recorded data are clear and easy to read
- Ideal Choice:Our watt meter power analyzer is perfect for monitoring the electricity usage of your home appliances,controlling your power consumption,and saving your money.Your best choice for power usage meter,kilowatt meter,amp meter,kwh meter,current meter and electricity meter
Manufacturer: kuman
Part Number: KW47-US-FBA
Item Weight: 7.4 ounces
Product Dimensions: 3 x 6 x 6 inches
Item model number: KW47-US
Is Discontinued By Manufacturer: No
Color: white
Style: NO-Backlight
Material: ABS
Item Package Quantity: 1
Included Components: Power meter *1 (US plug) User manual*1
Batteries Included?: No
Batteries Required?: No
Date First Available: June 12, 2018
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jul 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
To reduce expenses and to help protect the environment, in early 2021 our household started taking a number of measures to cut our energy consumption. Those measures have proven successful: total 2021 electricity consumption in our single-family, detached home in the US SE was about 8,000 kWh (3,200 of which was for HVAC), compared to about 11,000 kWh annual average in previous years. [UPDATE on 1/1/23: our total electricity consumption in 2022 dropped even further to just 5,500 kWh (1,600 of which was for HVAC) for the year. We have HALVED our electricity consumption. Huge savings. This electricity usage monitor continues to operate beautifully. We lend it to friends and family so that they can do their own diagnostics at their homes and see where they can save.] Looking back, we can say that purchasing the Kuman Electricity Usage Monitor Plug has been one of our wisest and most useful moves, and a very inexpensive one at that. The Usage Monitor Plug helped us to gain really eye-opening – and often surprising – insights into our electricity usage, allowing us to identify specific steps we could take to reduce consumption. Most importantly, we learned that “phantom power,” or the energy consumed by things when they are plugged in but not being used, accounted for a lot of our waste. Here are just a few examples: We discovered that our microwave used 64 kWh annually … in standby mode. We estimate that our actual annual use of the microwave takes less than 60 kWh. We now unplug it when we’re not using it. Another big consumer is our modem/router, coming in at 88 kWh/year. We now unplug it when the last person calls it a night. For people with set schedules, a timer switch would also work. Among the other major users of phantom energy are our TV w/ accessories (138 kWh/year when not being used but left plugged in) and our CD player (60 kWh/year in standby). One final example: Our rather old dishwasher is a real glutton, coming in at nearly 700 kWh/year. Newer, more energy-efficient models use less that 200 kWh/year. The next time our dishwasher breaks down, we will replace it rather than repair it. Finally, here are some other products we purchased at Amazon that we can recommend to those interested in cutting home energy consumption: Klein Tools TI250 Rechargeable Thermal Imager: www.amazon.com/gp/product/B089QW8R9S This tool, along with the Usage Monitor Plug, gave us a very good picture of where we were wasting energy. It was thanks to this tool that we realized, for example, that our then uninsulated recessed lights were really problematic, prompting us to purchase the following. FF130E Recessed Light Cover: www.amazon.com/gp/product/B002XVPUAO If you have recessed lights and they’re not well insulated in the attic, energy wastage can be massive. These were easy to put in, sealed with Great Stuff: www.amazon.com/gp/product/B00KSANBTY AcuRite Wireless Indoor Outdoor Temperature and Humidity Sensor: www.amazon.com/gp/product/B00T0K8NXC We got two of these to go with our AcuRite weather station. They allow us to monitor temperature and humidity in four places at once: outside, in our living room, in our crawlspace, and in our unfinished attic. Thanks to these readings, we have established a smarter, more energy-efficient way of ventilating our crawlspace. They also helped us see that our attic needed additional ventilation in the roof, prompting us to purchase the following. 4 SEASONS Solar Powered Polycarbonate Vent, Weatherproof Design, Quietly Cools Up to 500 Sq Ft, 400 CFM: www.amazon.com/gp/product/B01DMSCPJA Aootek solar lights 120 LEDs with lights reflector, 270 degree Wide Angle, IP65 Waterproof, Security Lights for Front Door, Yard, Garage, Deck (4 pack): https://www.amazon.com/gp/product/B07NQ4L1SB , as well as Solar Lights Outdoor,WWimy 210 LED 2500LM Motion Sensor Lights with Remote Control, 3 Heads Security LED Flood Lights, IP65 Waterproof, 270° Wide Angle Illumination Wall Lights with 3 Modes (2 Packs): www.amazon.com/gp/product/B08T9F2MM1 Purchased in August 2021, these lights continue to work well here in the SE, saving us over 150 kWh/year. We shared some of these lights with relatives in the North; they also report that their lights are going strong after a rough winter. STATINT Window Film Privacy One Way Daytime Mirror Static Non-Adhesive Solar Glass Film Heat Control: https://www.amazon.com/gp/product/B07W3VCZNF RYB HOME Room Darkening Patio Door Curtain, Hanging Room Divider Screen Insulated Drapes Privacy Wall Panel: www.amazon.com/gp/product/B07D32DJ2V , as well as RYB HOME Blackout Curtains & Drapes - Total Privacy Thermal Efficiency Backdrop Curtains for Bedroom Room Divider Vertical Blind Living Room Patio Sliding Glass Door: www.amazon.com/gp/product/B077SZRBNJ Grandekor Blackout Window Blinds and Shades Cordless Cellular Shades: www.amazon.com/gp/product/B07NWBGVL3
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Reviewed in the United States on March 31, 2022 by Carl Stubbs
Worked well and easy to understand. Very useful for doing your own energy audit. If you sense your refrigerator is running too long, this device will either confirm or relieve you. In my case, my 19 year old Whirlpool side by side is actually consuming in specified range. Keep that condenser clean!
Reviewed in the United States on October 5, 2025 by T. Sterne
This device works pretty much as advertised in what it measures, so my only real gripe is that the clock/timer function has been completely useless because it only seems to include time ranges when power is being drawn. So if you need to know how long a device is active, this may be helpful to you, but if you are measuring how much electricity is being consumed per hour or day, the number is useless. And likewise, the "Days" reading depends on the the clock, which keeps cycling on and off, so it's also a useless number. I had my home office equipment plugged into this device for 4 days, but the reading never moved off of "0 days". Another annoyance is that since the data is stored in this meter when you unplug it, if you want to move it to different outlet or devices, you have to press that tiny "reset" button to start back at 0. The reset function should have been more easily accessible, since you need to press it so often. About the instruction booklet...I agree with the other reviews. The English in these instructions is terrible. I realize this is a Chinese-made product, but what I don't understand is there are over 1 billion people in the world who speak fluent English, but none of the Chinese manufacturers can find any of them when it's time to translate their user manuals. They are either just using Google translate or using a non-native speaker to do their translations. So most of the time, these instruction manuals are a disaster. They should just hire a native English speaker to do these instructions instead and be done with it.
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Reviewed in the United States on March 13, 2021 by B. Williams, Software Engineer
A great way to learn what you are really spending to keep all your electrical items always on standby mode. I found out that leaving my microwave plugged in when I wasn't using it actually used more electricity than it did using cooking. food each year. Now I save the cost of all that power just to be able to see what time it is. I've got a watch, a phone and a battery operated wall clock that lets me know the time. My electric bill is much less now that I've made a habit of checking to see how much all my instant on things were wasting. Took a while to check everything but was well worth it.
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Reviewed in the United States on May 1, 2026 by Ms.Pat
I use them throughout my home to track my power consumption. Easy to use, very bright display. Connects effortlessly.
Reviewed in the United States on May 30, 2026 by That Guy
This is a great little tool. We live off grid using solar only. So, we need to monitor our usage and know what kind of power all of the electric appliances, from coffee makers to window AC and even space heaters pull. You just plug this into the wall and plug in your appliance, let it run for at least 30 minutes and then this will let you know consumption, wattage, etc. Great to use if you camp and use solar, because you can test out your appliances to make sure you can use them using solar only when boon docking. Super gadget that must be in every one's tool box
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Reviewed in the United States on January 28, 2025 by SoCoGal
For me this was a non-starter. The screen is not readable from the side and the backlight turns off after a few seconds.
Reviewed in the United States on December 12, 2025 by Paul
Seems to perform as advertised. I have an electric outboard motor and using this meter when I charge the batteries is giving me a good picture of just what the hour and distance of the system is. I especially like that it measures power factor.
Reviewed in the United States on October 5, 2025 by TWS