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
Tuesday, Oct 27
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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
Description
KUMAN Electricity Usage Monitor Plug Warm tips: The power of electrical appliances can not exceed 1800W. For latest instruction, please have it on "Product guides and documents". Thanks! NOTICE 1. ＊ With electricity expense calculating, you can monitor which appliance cost the highest energy and how much your standby appliances cost. In this way, you can determine how to low your power consumption. 2. ＊ When the current exceeds 16A, the "overload alarm" icon flashes. 3. ＊ If you receive the item and it do not power on or display, please plug it into the AC outlet for 10 minutes and press the reset button to reset. 4. ＊ If you don't use it for a long time, you need to plug it into the AC socket for 15 minutes and press the reset button to reset it. The power of electrical appliances can not exceed 1800W. The LCD will flash "OVERLOAD" to warn the users when the power exceeds to 1800W. It keeps track of how much power your socket has been using for a while, and you can calculate the charge to save you power and cost. Easy to reset the device by the middle reset button. Package listing Notice:
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
Color: white
Style: NO-Backlight
Material: ABS
Item Package Quantity: 1
Included Components: Power meter *1 (US plug) User manual*1
Date First Available: June 12, 2018
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Oct 27
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
Good unit to check amp and volt draw. This a 15amp max checking unit so no using any where above 15amps. If screen reads 14.5amps, you are close to its limit. Easy to use. Easy screen to see. I have two. One on stage right. One stage left. You can plug into a 20 volt circuit to check but still keeping under the 14.5amp-15amp limit. Probably be buying a third unit. I helps to know that you will not be tripping a provided circuit while on a job. This unit is more of a plug in and leave for 30 minutes check which is excellent. Thanks for a great product.
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Reviewed in the United States on July 21, 2026 by Phillip D Burkhart
Order one with a backlight!! I found myself having to grab a cell or flash light to see during overcast days. The function button cycles through all the various read outs. I realize now that I would prefer the dedicated buttons of the kill a watt. One cool feature is that it shows high and low watt usage so you can see how little or how much it spiked too. Super useful. But keep in mind that if you want to test multiple devices, which you probably will, you will have to reset it after each use to get accurate high and low readings. It seems pretty accurate when paired with a usb power meter, those measurements were pretty close on the volts and amps. Also note that the amp rating is interesting to me because I expected it to read 0.100 for 1 amp but it reads 0.010 for one amp. Im no expert though but its what I noticed. Overall, I am happy with the device and got some good readings from it. I ordered a 3 foot extension cord to use with this just to give me some more room compared to my 1 foot extension cable. The angels of the screen are ok but straight on is best which is where having that extension cord is valuable. You could even use a longer one but I dont think I will need anything longer than that and if I do I already have a few laying around the house.
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Reviewed in the United States on April 23, 2020 by Ive
This sort of meter is handy to discover how much electricity a single device (or multiple devices connected to a power strip) use under various usage conditions. This info can be handy to help optimize total power usage around the house (for example, to find ways to lower your electric bill). Many years ago, when I first started doing this analysis, about the only device on the market to do this was the classic Kill-A-Watt meter. However, over the years I've lost the Kill-A-Watt meters I've bought, so when I recently wanted to again do this analysis I looked into getting another Kill-A-Watt. But when I looked at prices of new Kill-A-Watt meters on Amazon, I found that the price has actually gone up over the years (vs lowering over time). However, this device appears to do the same function for about 1/3 of the price of a new Kill-A-Watt. So I decided to get it and see if it would do the job, and thankfully this device seems to be a decent "clone" of my old Kill-A-Watt for a fraction of the cost. Now this device isn't an exact duplicate of a Kill-A-Watt, as it does come with a different size, shape, and controls vs the Kill-A-Watt. But functionally this device performs the same function. And since this device is functionally the same, for a fraction of the cost, that's "good enough" for me. If any of you are curious, the main thing I'm currently using this meter with is my new window air conditioner (important, given the high temps that are currently hitting my part of the country). With this meter attached (to the AC cord) I get a constant readout of how much power that AC unit is currently using. This not only tells me how much the AC is adding to my electric bill, but also what state the AC unit is in. For example, if the power usage is around 70 watts, it means that the AC fan is running but the AC compressor isn't currently on. Conversely a usage in the 380-450 watt range means the AC is fully cooling with both fan and compressor active. And, of course, with the AC off the power usage goes to 0 (which is also reflected by this meter).
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Reviewed in the United States on June 6, 2023 by Amazon Customer
This is a version of the popular Kill-a-W*** monitor on the market for several years. It even has a "KW" model number. The meter allows you to see how many watts and amps specific appliances are drawing, as well as to see how much those items are costing you in electricity charges. It plugs into a 120v outlet to measure line voltage and amperage, then you plug specific appliances into the front of the meter to measure them. I plan to use this meter on my standby generator to see which appliances I can actually run, and to avoid overloads. In the meantime, I've included photos of the meter displaying line voltage and watts being used by a small LED table lamp, as examples. Entering the power company charges is a bit fiddly, but if that's important to you, it's do-able. Note that while this meter has a nice big and clear LCD display, it's not backlit, so in low light situations you will likely need a flashlight to read it. Alternatively, it has an internal battery to keep readings in memory, so you can read them later. I like having a way to monitor power usage, and this meter allows you to do it at an economical price.
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Reviewed in the United States on May 23, 2021 by M. Ross
Just got it today, took just a couple minutes to look it over and figure it out from the small two-page manual, which can also be viewed form the Amazon page. I wanted to figure out the surge watts--the highest power required by each of my devices-- and this unit reports both Lo and Hi watts used (just press the FUNCTION button until it displays what I'm looking for). When I unplug the device, it still retains the captured data so I can write them what I need later. I wish the display was brighter, but hey: for about half the price of the competition, AND to report the Hi watts (surge watts), this is awesome! But to be honest, I've used it only for a couple hours so far. Tonight, I'll use it to tell me the wattage of my fridge, which I need to know as we're thinking about emergency power backup generators. I found it's useful to a 12-gauge extension cord (mine is just 2-ft long) which I first plug into my electrical outlet. Next, I plug the Kuman device into the extension cord, and then the device I'm testing plugs into the Kuman device. Then, I press the reset button (with a pen or paper clip) to reset/zero the counters. When I tested my computer, I have several devices (scanner, external monitor, camera, other devices being recharged, etc.) plugged into my Rosonway 3.0 USB hub, and all power cords are plugged into the same extension surge protector. So to measure the wattage my devices use, I just unplug the surge protector from the wall and insert this Kuman device between the surge protector and the electrical outlet. Simple. Highly recommended, would absolutely buy again!
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Reviewed in the United States on February 25, 2021 by Eric R.
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 Impressive
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