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Purchase options and add-ons

Choose from the Kill-a-Watt's four settings to monitor your electrical usage
Monitor your electrical usage by day, week, month, or year
Features easy-to-read screen
Electricity usage monitor connects to appliances and assesses efficiency
Large LCD display counts consumption by the kilowatt-hour
Calculates electricity expenses by the day, week, month, or year
Displays volts, amps, and wattage within 0.2 - 2.0percent accuracy
Compatible with inverters; designed for use with AC 115-volt appliances

› See more product details

Additional Details

Small Business

This product is from a small business brand. Support small.

Customer ratings by feature

Easy to use

4.8

User interface

4.8

Value for money

4.7

Energy efficiency

4.6

See all reviews

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P3 International P4460 Kill A Watt EZ Electricity Usage Monitor , grey
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Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption, Energy Voltage Amps Kill Tester with Backlight, Ove

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SURAIELEC Watt Meter, Plug-in Socket Power Meter, Auto Cost Calculator, Backlit Large Display, Overload Protection, Kilowatt

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CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

From the manufacturer

Electricity Usage Monitor

It's no secret that electricity bills are on the rise. With the P3 P4400 you can cut your energy costs and find out what appliances are actually worth keeping plugged in by finding power-wasting appliances. Simply connect any appliance to the Kill A Watt EZ, it will then assess how efficient each appliance really is.

Kill A Watt EZ Power Monitor

Calculate your homes cumulative electrical expenses and forecast by the day, week, month, even an entire year. Also check the quality of your power by monitoring Voltage, Line Frequency, and Power Factor. Now you’ll know if it is time for a new refrigerator or if that old air conditioner is still saving you money. With the amazing Kill A Watt EZ you’ll know 'Watts' killing you.

User Friendly and Easy to Install

Save on Your Electricity Bills

Unique Features

Easy to read large LCD screen
Accurate within 0.2%
Calculates cost and forecasts by week, month and year
Displays eight critical unites of measurements
Built in Battery Backup

Technical Specifications

Model: P4400

Operating Voltage: 115 VAC

Max Voltage: 125 VAC

Max Current: 15 A<

Max Power: 1875 VA

Weight: 5 oz

Dimensions: 5 1/8″ H x 2 3/8″ W x 1 5/8″ D

Kill A WATT EZ Power Monitor

Model P4400

With the P4460 you can easily identify which appliance in your home is costing you the most money. The Power Monitor also allows you to enter your Utility providers cost of electricity so you can monitor and pinpoint what each appliance is costing you.

Founded in 1987, P3 International is a privately owned manufacturer of solution oriented consumer products. For the last twenty five years we have strived to develop products that are easy to use and ahead of their time.

We are committed to manufacturing high quality products that appeal to a variety of different people, from the environmentally conscious to the more technologically minded consumer. With this philosophy driving us we are always looking for innovative new products which we can offer our customers.

WARNING: California’s Proposition 65

Product Description

Amazon.com

Empowers You to Save Hundreds on Electric Bills

Electricity bills are rising. Now you can cut down on costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt, and it will assess how efficient they really are. The large LCD display counts consumption by the kilowatt-hour, the same as your local utility. You can calculate your electrical expenses by the day, week, month, even an entire year. Also check the quality of your power by monitoring voltage, line frequency, and power factor. Now you will know if it is time for a new refrigerator or if that old air conditioner is still saving you money. Kill A Watt can help you reduce your power bill and will help find power-wasting appliances so you are able to decide whether it is worth keeping them plugged in. For standard 115 VAC appliances only, 15 amps maximum, 125 VAC maximum.

Find Out How Much Electricity You're Using

The U.S Department of Energy reports that 20% of our electric bills come from items that are left plugged in when they are not in use, or items that are in standby mode. With the Kill A Watt P4400 we can monitor the energy eaters in our homes and cut down our electric bills at the same time. Plug whatever item you want into the device and it will tell you the efficiency of that item by displaying the kilowatt per hour. This device will help you determine which items are costing you the most to run. The Kill A Watt also calculates voltage, line frequency, current, and power factor. You can calculate your electric bill before you even receive it from the electric company.

Test The Quality of Your Home's Power

But measuring appliance consumption is just the tip of the iceberg. Because it can monitor voltage (Volt) and line frequency it can also test if an outlet is working, or evaluate the quality of the electrical power provided by your utility company. It can detect voltage drops around the house, help to predict brownout conditions or to make sure a new home's outlets are in working condition before escrow closes.

About P3 International

Founded in 1987, P3 International is a privately owned manufacturer of solution oriented consumer products. For the last twenty years they have strived to develop products that are easy to use and ahead of their time. Thanks to their customer-centric attitude and support from their clients, they have experienced steady growth over the past decade.

They are committed to manufacturing high quality products that appeal to a variety of different people, from the environmentally conscious to the more technologically-minded consumer. With this philosophy driving them they are always looking for innovative new products which they can offer their customers.

Their unique products have garnered much attention, in particular the Kill A Watt. Reviews of P3 products have been featured in newspapers such as The New York Times and The Wall Street Journal.

Technical Specifications

Accuracy: +/- 0.2%
Input Power: 115 volts AC, 60 Hz
Max Current: 15 amps
Max Voltage: 125 volts
Max Power: 1875 VA
Dimensions: 5.1 inches long x 1.6 inches thick x 2.4 inches wide
Approvals: ETL (c), ETL (us)
Origin: China
Manufacturer Warranty: 6 months

Product information

Technical Details

Manufacturer

‎P3

Part Number

‎P4400

Item Weight

‎5.6 ounces

Product Dimensions

‎8.4 x 2.1 x 6.1 inches

Item model number

‎LGP4400

Batteries

‎1 CR123A batteries required.

Is Discontinued By Manufacturer

‎No

Size

‎Original version

Color

‎White

Style

‎1 Pack - Model P4400

Material

‎Other

Pattern

‎Monitor

Power Source

‎air-powered

Voltage

‎115 Volts

Amperage Capacity

‎15 Amps

Item Package Quantity

‎1

Number Of Pieces

‎1

Display Style

‎LCD

Certification

‎No

Special Features

‎Portable

Usage

‎personal

Included Components

‎usage monitor

Batteries Included?

‎No

Batteries Required?

‎No

Warranty Description

‎1 Year Limited

Additional Information

ASIN

B00009MDBU

Customer Reviews

4.6 9,387 ratings

4.6 out of 5 stars

Best Sellers Rank

#9,424 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#4 in Electrical Meter Sockets

Date First Available

October 2, 2001

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Product guides and documents

User Manual (PDF)

Specification Sheet (PDF)

Important information

Legal Disclaimer

Warranty does not cover misuse of product.

Bulb Voltage

115 volts

To report an issue with this product, click here.

Looking for specific info?

Customer reviews

4.6 out of 5

9,387 global ratings

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Top reviews from the United States

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Katya

Easy to use - great tool to have!

Reviewed in the United States on August 27, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

If I could give 4.5 stars, I would.
I don't like that it defaults to volts as the display, my outlets are all 120V, thank you but that's not what I'm measuring.

The screen is a little hard to read, but I just shine a light nearby and it's no problem.

Super easy to get the wattage reading from your electronics and I love that it also records kwh over time!

3 people found this helpful

Helpful

Neurologist

Extremely Useful

Reviewed in the United States on September 20, 2012

Item Package Quantity: 1Color: WhiteVerified Purchase

Don't bother buying the more expensive models of the Kill-A-Watt. The P3 model is more than enough. It will give you how many watts your device is drawing, as well as the number of amps, number of volts (at the outlet), and frequency (60 hertz). It also keeps track of the total number of kilowatts hours your device has used during the length of time you have been monitoring the device. To calculate how many kilowatt hours your device will use in a month, you just need a bit of simple math:

(Watts/1000) x (number of hours device is turned on per day) x (31 days) = Kilowatt hours per month

Example for a 100 watt light bulb that is left on continuously for a month:

(100/1000) x 24 x 31 = 74.4 kwh per month

Note that a kilowatt is 1000 watts and 1 kilowatt hour is the equivalent of ten 100 watt light bulbs burning for 1 hour.

Electricity is billed in kilowatt hours so you can find out how much each kilowatt hour costs by contacting your electric company or looking on their website. Your electric bill should tell you how many kilowatt hours you used in a given month. It is easy to calculate how many tons of CO2 your electricity use produces. The EPA website estimates 6.8956 x 10-4 metric tons of CO2 per Kilowatt hour. I pay for 100% wind power through my utility, which only adds about $1.80 per month to my electric bill and we use a lot of electricity (about 1200 kwh per month). Part of this large number is the fact the landlord installed an electric water heater (a gas water heater would be much more efficient).

I finally ordered a P3 Kill-A-Watt and wish I had ordered one 10 years ago because it would have paid for itself many times over. If you check various items in your home, you will be surprised at how much electricity things use. Many electrical devices draw 2 to 5 watts or more when they are turned off but left plugged in! When you count how many things you have plugged in in you home, this adds up. I now unplug things I am not using.

One of the biggest energy wasters is the common light bulb, which wastes 98% of its energy as unwanted heat. For comparison, I have an old style Sony 32 inch TV (picture tube, not flat panel) that draws 150 watts. A single reading lamp with a common 150 watt bulb uses the same amount of electricity as this large TV. You are much better off using compact fluorescent bulbs which use FAR LESS electricity. Amazon sells GE compact florescent 100 watt (equivalent) bulbs that actually use only 26 watts. (Type "compact fluorescent 100 watt" into Amazon search). The compact florescent GE 60 watt (equivalent) bulbs actually use only 13 watts. These bulbs screw right into your existing lamps and light fixtures and will pay for themselves many times over. The downside of compact florescent bulbs is that they contain a significant amount of mercury (about 5 grams). There are special cleanup procedures you should follow if you accidentally break one inside--open a window, do NOT vacuum--see the EPA's "Cleaning Up a Broken CFL" article for the full procedure [...]
Because compact florescent bulbs contain mercury, they must not be disposed of in regular trash. Call your local municipality to learn how to dispose of items that contain mercury--many municipalities have recycling programs for mercury containing items. A much better alternative to compact florescent bulbs are LED bulbs (do not contain mercury) which are a new technology and consequently expensive at the moment but prices will come down with time.

A final note on the Kill-A-Watt regarding computer power supplies. I build computers and, prior to owning a Kill-A-Watt, ended up buying much larger (and more expensive) power supplies than I really needed because of some misleading information on the web. For example, the computer I am typing this on with a good Intel CPU and an expensive video card draws 130 watts at idle and 270 watts with both CPU and video card fully loaded (running Prime95 and 3DMark simultaneously). Unfortunately, I put a 750 watt power supply in this computer, which was totally unnecessary. It is important to purchase a high quality power supply, but you definitely don't need a 750 watt power supply for a computer that draws 270 watts at full load.

15 people found this helpful

Helpful

FLShopper

Worth more than the price!

Reviewed in the United States on December 23, 2014

Item Package Quantity: 1Color: WhiteVerified Purchase

Received the monitor last week and I am delighted with it. I never knew such a thing existed, but I stumbled upon it when researching another item. Your reviews led me to purchase. I keep it in a power strip so that it is easy to read the display since your reviews alerted me about that issue. Very easy to use. Came with a description of the monitor but no real instructions on how to benefit; however, it is intuitive enough and at this point I have not felt the need to do calculations. I am more learning what is using phantom energy and what are the heavy energy users in my house. So, because of my testing this week, I now unplug my printer after use, but I still keep other electronics on the strip in standby. The bigger reveals was the main TV. My favorite and most used TV is an LG flat screen about 11 years old. Very rich colors and just an excellent unit. Well the age showed up on the monitor as it was pulling 150-180 watts. What was a real eye opener was that the energy for black and white movies was much lower- about 93 watts. So, as you can guess, I packed that away and put up the 2 year old 42" flat screen, which uses about 1/3 the energy of the older unit. Not as brilliant a display, but after awhile you don't even notice. Also, as a result of monitoring last week I purchased a new portable space heater. The older one was small but using an outrageous amount of energy. I put it in the bathroom for a quick turn on and off if needed. I purchased a Lasko tower with remote control that uses much less energy for the bedroom. I will also use very sparingly a floor lamp. I still have appliances to test, but I am having so much fun with this, besides having it inform energy use. Will take it when I go to visit family this week and test their stuff, I have been talking about it so much. The other thing I like is being able to test the voltage coming out of the wall. I don't agree with those who say it is a one use tool, because as standards change, it would be good to see what items no longer meet updated measures. 4 stars for the design flaw.

6 people found this helpful

Helpful

audie

You need this to know what your actual loads are

Reviewed in the United States on November 7, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

This works as advertised and is very useful.

One person found this helpful

Helpful

Top reviews from other countries

Liliana E

Good

Reviewed in Canada on December 2, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

Two years of use still works fine

Joe Adams

Meter

Reviewed in Canada on November 22, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

Works great!!

Murray L. Vasilev

These meters just work!

Reviewed in Canada on October 6, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

I have a solar system at my remote cabin which has an inverter to provide AC power, it is imperative to know the electrical loads of my appliances and other devices. This meter does the trick. Unfortunately it does not measure peak power when motors and compressors start but that would require a much more advanced meter.

Eliot

Hadny tool for the power conscience.

Reviewed in Canada on January 27, 2016

Item Package Quantity: 1Color: WhiteVerified Purchase

Useful and helpful in tracking active and phantom electric usage around the house.

I am somewhat obsessed in tracking down and finding unwanted and phantom electric usage around the house. With the rising cost of energy, I am working on justify moving to a more renewable energy source, but first I need to understand how I use energy. That way, I can determine grid-tie or off-grid approach is better. Or simply, to supplement during power outages.

This device is basic, but does exactly what you need. The only drawback is that you need to keep it plugged in to check all the measurements as it has no “off power” memory like its bigger (more expensive) brother. The EZ model. But, I did not see a need for the increase cost, and as I understand, you still need to plug that one back in in order to retrieve the data anyway.

Usage is simply, though some tips.
1) Plug the device you want to measure into the Kill-A-Watt monitor first, then into the outlet. The monitor will start recording as soon as it is plugged in. You may only be talking a couple of seconds, but sometimes I find it just made things easier to do in the end.
2) The plug fit on the monitor is a little “snug”. Part of the reason I plug the appliance into the monitor first. That way I am not fussing when reaching into those hard to reach areas.
3) If you are just wanting the standard Watt/kWh usage (like say for your router/modem, coffee machine or TV when in power on state). Do wait until the appliance has completed its power-up before taking a reading. However, remember that in order to get a true kWh reading, you are best to let it monitor for a full 24 hours. This way you know what a full day costs (in terms of kWh), and you can then average what an hourly kWh cost would be if desired.
4) Can either plug a power strip into it, or it into a power strip. If you have multiple devices attached to a power strip, you can plug that power strip into the monitor and it will monitor total watts. Handy when you have a setup where all devices are typically on at one time (ie: your office computer, router, monitor, printer, etc..). Then you will know the total power used. However, if you curious, you can plug the individual devices into the monitor and then it into the power strip. This is handy if you have a power strip to help reach that hard-to-reach outlet. This may depend on the power strip, but in my case, the sum of individual usage _did_ equal the total power strip usage (ie: power strip did not add anything, or was negligible).

So far, I am finding that on my newer devices and appliances, the phantom energy is negligible (though it does add up, we are still talking pennies). But I did find that my cheap freezer chest is a bit of an energy hog, so looking into what can be done about that.

In the end. Handy product to have in the tool box.

8 people found this helpful

patrick olivier

is it accurate?

Reviewed in Canada on October 16, 2023

Item Package Quantity: 1Color: WhiteVerified Purchase

i don't know if it accurate but it sure helps me with my projects

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P3 P4400 Kill A Watt Electricity Usage Monitor

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From the manufacturer

Electricity Usage Monitor

Kill A Watt EZ Power Monitor

User Friendly and Easy to Install

Save on Your Electricity Bills

Unique Features

Technical Specifications

Kill A WATT EZ Power Monitor

Model P4400

Product Description

Amazon.com

Empowers You to Save Hundreds on Electric Bills

Find Out How Much Electricity You're Using

Technical Specifications

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

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