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P3 P4400 Kill A Watt Electricity Usage Monitor

4.6 4.6 out of 5 stars 9,606 ratings

$34.28 with 14 percent savings
List Price: $39.95

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No Import Fees Deposit & $12.87 Shipping to France Details

Shipping & Fee Details

Price $34.28
AmazonGlobal Shipping $12.87
Estimated Import Fees Deposit $0.00
Total $47.15

Available at a lower price from other sellers that may not offer free Prime shipping.
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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

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Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

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From the manufacturer

P4400

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.

P4400

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

P4400

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.

Product guides and documents

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Product information

Technical Details

Additional Information

Warranty & Support

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

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Product Description

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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

WARNING:

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

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Price-14% $34.28
List:$39.95
$17.99-6% $15.99
List:$16.99
$9.99$11.99$43.90
Delivery
Get it as soon as Tuesday, Sep 3
Get it as soon as Monday, Sep 2
Get it as soon as Friday, Aug 30
Get it as soon as Friday, Aug 30
Get it as soon as Friday, Aug 30
Customer Ratings
Sold By
Timers Plus
Ketotek
SURAIELEC
BN-LINK
Fayleeko Direct
Timers Plus

Important information

Legal Disclaimer

Warranty does not cover misuse of product.

Bulb Voltage

115 volts

Customer reviews

4.6 out of 5 stars
9,606 global ratings

Customers say

Customers like the quality, appearance and performance of the tool. For example, they mention it's a surprisingly useful tool that provides some other useful functions like instantaneous voltage measurement. They also like the ease of use, accuracy, and value. That said, opinions are mixed on electricity and readability.

AI-generated from the text of customer reviews

1,759 customers mention "Performance"1,577 positive182 negative

Customers like the performance of the tool. They mention that it works well, the circuit works great, and is very useful to understand electronic systems. Some say that it's a fun nerd-ish toy, but a solidly useful tool that will save them enough power. Overall, most are happy with the performance and find it to be a great little gadget.

"...(I pay the utilities in the building) This works well for everybody." Read more

"Great tool works perfect. The prices a little high there’s other models that are below half the price sorry but no thank you." Read more

"...The measurements seems ok and are very useful but the display is terrible. If you are in an even slightly dark area you can’t read the display...." Read more

"...Anyway, that said, it appears to work well. It's easy to use which is good because the "instruction manual" wouldn't be very helpful if it wasn't...." Read more

997 customers mention "Accuracy"910 positive87 negative

Customers are satisfied with the accuracy of the product. They mention that it is especially good for monitoring energy usage while the equipment is on standby, and it is most useful when investigating electrical power usage and verifying the power consumption of appliances. It reads wattage and cumulative kWh, and tells you kWh and time of use, plus other useful numbers such as current (A), power, and is a neat tool for assessing energy efficiency. It also tracks the cumulative electricity used from the point you plug something in, and can inform energy use.

"...Useful to check during brownout conditions, simply because using some appliances during low voltage conditions can potentially damage them..." Read more

"You can check your watts being used." Read more

"Exactly as advertised. You can see watts, amps and volts. I've plugged this thing into so many devices to see it's power draw!..." Read more

"...and simple operation, this device allows you to accurately measure the electricity usage of any appliance...." Read more

782 customers mention "Ease of use"626 positive156 negative

Customers find the tool very simple to use and enlightening. They say the settings and buttons make sense and the display is easy to read. Customers also say the tool has helped them troubleshoot and answer some questions.

"...Knowledge is Power!This is easy to use & well worth every penny of its cost...." Read more

"I like the simplicity of use. It looks like a brick, money well spent. Instant reading...." Read more

"...With its easy-to-read display and simple operation, this device allows you to accurately measure the electricity usage of any appliance...." Read more

"...Anyway, that said, it appears to work well. It's easy to use which is good because the "instruction manual" wouldn't be very helpful if it wasn't...." Read more

656 customers mention "Quality"539 positive117 negative

Customers like the quality of the tool. They say it's surprisingly useful, easy to use, and gives great information. They also say it provides some other useful functions, like instantaneous voltage measurement, and it makes for an interesting experiment. Customers say it reveals some interesting facts about appliances and helps provide incentive to take action. However, some customers have reported drawbacks with the product.

"...It's a simple device, full of information when it's used.Once you know the information, it's adds to the office decor...." Read more

"...There are many functions that you can go through." Read more

"...I think this gadget has potential for being useful...." Read more

"...that will keep you entertained for a couple of days and give you some good information. Then you should lend it out to everyone you know!..." Read more

460 customers mention "Value"414 positive46 negative

Customers find the value of the tool to be good for the money. They say its utility justifies the price, and it comes in handy when evaluating power. Customers also say the price is acceptable for a diagnostic tool and it can help you save money.

"...Knowledge is Power!This is easy to use & well worth every penny of its cost...." Read more

"...It's a simple device, full of information when it's used.Once you know the information, it's adds to the office decor...." Read more

"I like the simplicity of use. It looks like a brick, money well spent. Instant reading...." Read more

"...I know this is the low-end model and I appreciate that it is fairly inexpensive...." Read more

186 customers mention "Appearance"142 positive44 negative

Customers like the appearance of the tool. They say it's a nice looking device, neat, and cool. They also say it has a rich display and the LCD has nice contrast.

"I like the simplicity of use. It looks like a brick, money well spent. Instant reading...." Read more

"This watt monitor does everything it says. It was fun to go around the house and test things to see how much juice it draws, even when supposedly in..." Read more

"...Very rich colors and just an excellent unit. Well the age showed up on the monitor as it was pulling 150-180 watts...." Read more

"...it is also very dated looking, like it belongs in the early 90's from an aesthetic point of view...." Read more

346 customers mention "Readability"110 positive236 negative

Customers are mixed about the readability of the tool. Some mention that it's easy to read and understand, with clear numbers and a clear display. However, others say that the design is outdated and the display is difficult to read in low light and from an angle.

"...2. the display can be hard to read, I often have to shine a light directly onto it, this is my main reason for giving it 4 stars..." Read more

"...The measurements seems ok and are very useful but the display is terrible. If you are in an even slightly dark area you can’t read the display...." Read more

"...It looks like a brick, money well spent. Instant reading. The only thing I wish it did was have a light up display not super bright...." Read more

"...in back of the tree and since once unplugged this unit does not maintain its display (having no battery backup) nor does it have a back light on its..." Read more

158 customers mention "Electricity"89 positive69 negative

Customers are mixed about the electricity. Some mention that it gets them thinking about energy efficiency, saves quite a bit of power, and is perfectly adequate to demonstrate the power savings. However, others say that it registers zero Watt or AMP, and stops drawing any significant power once it is at pressure.

"...I LOVE this device, because it's helped me logically evaluate actual energy usage, instead of just going by my "gut" feeling...." Read more

"...THIS ONLY SHOWS YOU REAL TIME POWER USAGE AND AVERAGE POWER CONSUMED. limited data available and no BT or app capabilities...." Read more

"...It has the potential to help eliminate old inefficient devices." Read more

"...5- It does not have internal power, a second of disconnection will ruin all your accumulated measurement.My conclusion:..." Read more

It works fine
4 out of 5 stars
It works fine
It's definitely worth buying if you want to know how much something uses electricity. It's a simple device, full of information when it's used.Once you know the information, it's adds to the office decor.I did find out my office PC and it's two monitors are energy hogs and in a month it is probably 33% of my electricity costs, yikes!
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Top reviews from the United States

Reviewed in the United States on August 5, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
I allow my tenants to have an AC unit only if they use a power counter like this. i then bill them for the power used at the end of the month. (I pay the utilities in the building) This works well for everybody.
Reviewed in the United States on May 11, 2015
Item Package Quantity: 1Color: WhiteVerified Purchase
Ever wonder how many watts an appliance is using? I have. That's why I bought this; I was wondering if my "tea machine"  Tiger PDN-A50U Electric Water Dispenser, 5.0-Liter  was an energy hog or a conservation appliance. Thanks to this, I now know it's an energy SAVER.

This could not be easier to use. Simply plug the meter into any wall socket. Leave it there as long as you like and use this meter like an electrical outlet. When you want to measure an appliance's electricity use, you simply press the "Watt" button & the LCD display will show you the real-time wattage usage. For example, with my "tea machine," when it boils water, it uses about 900 watts. Once it stops boiling, it uses just .3 watts, on average, to keep warm. When dispensing, it uses 62 watts (to power an electric pump), then immediately reverts back to its .3 watt "keep warm" usage.

This can also be used as a voltmeter (measuring the electricity flow INTO the outlet). For American household power, this is roughly around 120 volts (except in "brown out" conditions). Useful to check during brownout conditions, simply because using some appliances during low voltage conditions can potentially damage them (this, fortunately, rarely happens in the US, but some Californians have occasionally experienced this).

There's also a purple KwH button. This will let you measure the KwH usage of an appliance over a period of time. If you have an appliance (say, like a stereo subwoofer) that you suspect might be a Vampire Power Energy Hog (one that uses a lot of power, even when turned off), you can easily confirm this suspicion by plugging it into this meter, pressing the KwH button, & then check in 24 hours and see how many KwH your appliance has consumed. If your subwoofer's an energy hog, just unplug it when you're not using it & you'll lower your electrical bills.

I LOVE this device, because it's helped me logically evaluate actual energy usage, instead of just going by my "gut" feeling. Knowledge is Power!

This is easy to use & well worth every penny of its cost. In just a month, it more than pays for itself, if you've not been paying sufficient attention to your energy use. Now, instead of guessing how much power you're actually using to operate an appliance, now you can know. Great for everything from rice cookers, tea machines, toaster ovens, computers, printers, stereo equipment, battery chargers & more. A+!
8 people found this helpful
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Reviewed in the United States on August 2, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
You can check your watts being used.
Reviewed in the United States on August 13, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
It's definitely worth buying if you want to know how much something uses electricity. It's a simple device, full of information when it's used.
Once you know the information, it's adds to the office decor.
I did find out my office PC and it's two monitors are energy hogs and in a month it is probably 33% of my electricity costs, yikes!
Customer image
4.0 out of 5 stars It works fine
Reviewed in the United States on August 13, 2024
It's definitely worth buying if you want to know how much something uses electricity. It's a simple device, full of information when it's used.
Once you know the information, it's adds to the office decor.
I did find out my office PC and it's two monitors are energy hogs and in a month it is probably 33% of my electricity costs, yikes!
Images in this review
Customer image
Customer image
Reviewed in the United States on June 5, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
Exactly as advertised. You can see watts, amps and volts. I've plugged this thing into so many devices to see it's power draw! Highly recommend as a staple for home monitoring
One person found this helpful
Report
Reviewed in the United States on May 29, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
I like the simplicity of use. It looks like a brick, money well spent. Instant reading. The only thing I wish it did was have a light up display not super bright. There are many functions that you can go through.
One person found this helpful
Report
Reviewed in the United States on June 20, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
Great tool works perfect. The prices a little high there’s other models that are below half the price sorry but no thank you.
One person found this helpful
Report
Reviewed in the United States on April 9, 2024
Item Package Quantity: 1Color: WhiteVerified Purchase
The P3 P4400 Kill A Watt Electricity Usage Monitor is a game-changer for anyone looking to take control of their energy consumption. With its easy-to-read display and simple operation, this device allows you to accurately measure the electricity usage of any appliance. Whether you're trying to reduce your carbon footprint or cut down on your energy bills, this monitor gives you the insights you need to make informed decisions. It's a must-have tool for anyone interested in conserving energy and saving money.

Top reviews from other countries

Translate all reviews to English
Patrick Montague
1.0 out of 5 stars Non UK product
Reviewed in the United Kingdom on November 22, 2022
Item Package Quantity: 1Color: WhiteVerified Purchase
If you live in the UK, do NOT buy this product. It is not designed for the UK and you will have to return it. The company, so far, has refused to pay the return postage, even though this is entirely their mistake. I have no idea why it is not clearly labelled.
5 people found this helpful
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Jorge
5.0 out of 5 stars Excelente producto.
Reviewed in Mexico on August 1, 2018
Item Package Quantity: 1Color: WhiteVerified Purchase
Fantástica compra, cumplió todas mis expectativas y al tener un soporte de hasta 1.8kw me permite medir dispositivos de alto consumo.

Quien iba a decir que mi PC (solo el gabinete) consume 4 veces mas que mi refri de 7 pies. Gracias a esta maravilla, ahora lo sé.

Recomendadísimo, entrega en excelentes condiciones y vino empaquetado con su bolsa antigolpes.
4 people found this helpful
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Phil
1.0 out of 5 stars Shouldn't Be Sold In Japan
Reviewed in Japan on January 19, 2021
Item Package Quantity: 1Color: WhiteVerified Purchase
1. Operating voltage is incompatible with Japan's 100VAC.
2. Seller support is poor and maker (P3) doesn't respond to emailed questions.

A waste of money.
7 people found this helpful
Report
Murray L. Vasilev
5.0 out of 5 stars 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.
Rod
1.0 out of 5 stars Not useable in UK
Reviewed in the United Kingdom on August 25, 2021
Item Package Quantity: 1Color: WhiteVerified Purchase
Bought this on Amazon UK and it does not state that it is not suitable for UK use - plugs are US(?). Will now have to pay a lot to return it to a US address. Not impressed.
27 people found this helpful
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