| Manufacturer | P3 |
|---|---|
| Part Number | P4400 |
| Item Weight | 5.6 ounces |
| Product Dimensions | 8.4 x 2.1 x 6.1 inches |
| Country of Origin | China |
| 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 | Corded Electric |
| Voltage | 115 Volts |
| Amperage Capacity | 15 Amps |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Display Style | LCD |
| Certification | ETL |
| Special Features | Portable |
| Usage | personal |
| Included Components | NO |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 1 Year Limited |
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P3 P4400 Kill A Watt Electricity Usage Monitor
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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Learn more
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
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
Additional Details
Customer ratings by feature
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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.
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P4400 vs P4600 Kill-A-Watt Energy Monitor
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Kill A Watt Electricity Usage Monitor Review
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KWH Meters COMPARED P3 vs SURAIELEC #thisorthat
Frugal Repair

Product information
Technical Details
Additional Information
| ASIN | B00009MDBU |
|---|---|
| Customer Reviews |
4.6 out of 5 stars |
| Best Sellers Rank | #10,616 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #5 in Electrical Meter Sockets |
| Date First Available | September 9, 2004 |
Warranty & Support
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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
WARNING:
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This Item P3 P4400 Kill A Watt Electricity Usage Monitor | Recommendations | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
| Price | -19% $32.16$32.16 List: $39.95 | $17.99$17.99 | $13.99$13.99 | $43.90$43.90 |
| Delivery | Get it as soon as Wednesday, Apr 10 | Get it as soon as Wednesday, Apr 10 | Get it as soon as Thursday, Apr 11 | Get it as soon as Wednesday, Apr 10 |
| Customer Ratings | ||||
| Accuracy | 4.5 | 4.4 | 4.2 | — |
| Easy to read | 4.3 | 4.5 | 3.3 | — |
| Easy to use | 4.8 | — | 4.1 | — |
| Value for money | 4.7 | — | 4.9 | — |
| Energy efficiency | 4.6 | 4.7 | — | — |
| Sold By | Timers Plus | Ketotek | BN-LINK | Timers Plus |
Important information
Warranty does not cover misuse of product.
115 volts
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, value, and performance of the tool. For example, they mention it's easy to use, provides great information, and is good value for the money. Some appreciate accuracy, and ease of use. That said, opinions are mixed on readability, and electricity.
AI-generated from the text of customer reviews
Customers like the performance of the tool. They say it works perfectly for their needs, the circuit works great, and is very useful to understand electronic systems. Some customers also mention that it's a great little gadget and practical.
"Works great. Easy to use." Read more
"...Worked great. Now I will use it on other systems in my house." Read more
"...Now, as for the rest, this thing does what I want it to, and does it quite well...." Read more
"I never knew how useful this would be. I'm very happy with the performance. It should be a part of every technicians kit...." Read more
Customers like the accuracy of the tool. They say it's especially good for monitoring energy usage while the equipment is on standby, investigating electrical power usage, and verifying the power consumption of appliances. It's also useful for measuring Power Factor, kWh, and time of use, plus other useful numbers such as current, power, and assessing energy efficiency. It also tracks the cumulative electricity used from the point you plug something in, and helps monitor them all.
"...this "Kill a Watt" and I am so impressed with ease of use and unequalled accuracy. Makes predicting usage over a day or week a breeze!" Read more
"...Useful to check during brownout conditions, simply because using some appliances during low voltage conditions can potentially damage them..." Read more
"...test, but I am having so much fun with this, besides having it inform energy use...." Read more
"...It will also track the cumulative electricity used from the point you plug something in...." Read more
Customers find the tool very simple to use and enlightening. They say the device is not complex, the settings and buttons make sense, and the display is easy to read. They also say it helps with troubleshooting and answers some questions.
"Works great. Easy to use." Read more
"...I started saving money the first week I began using this gauge. It's easy to use and gives you great information...." Read more
"This is a pretty neat device that measures how many watts a device is using and keeps a total of kilowatt hours used over time..." Read more
"...I bought this "Kill a Watt" and I am so impressed with ease of use and unequalled accuracy. Makes predicting usage over a day or week a breeze!" Read more
Customers like the quality of the tool. They say it's surprisingly useful, easy to use, and provides great information. They also mention that it makes for an interesting experiment and reveals interesting facts. Overall, customers are happy with the product's quality and functionality.
"...It's easy to use and gives you great information. You'll be surprised where your excess electricity is going. This gauge will tell you...." 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
"...It reveals some insteresting facts such as how much energy an amplifier consumes when idle..." Read more
"...I think this gadget has potential for being useful...." Read more
Customers find the tool to be a good value for the money. They say its utility justifies the price, and the price is acceptable for a diagnostic tool. Customers also say it's an easy way to save money and is simpler than cheaper knockoffs.
"...I know this is the low-end model and I appreciate that it is fairly inexpensive...." Read more
"Decent price, and I may use it more in the future...." Read more
"...Knowledge is Power!This is easy to use & well worth every penny of its cost...." Read more
"...LED bulbs can save a TON of money over incandescent without the risk of mercury in fluorescents bulbs and LED will last forever unlike fluorescent..." Read more
Customers have mixed opinions about the readability of the tool. Some find it easy to read and understand, with clear buttons and numbers. They also say the display is easy to see in dim light and from an angle. However, some customers report issues with the display being difficult to read in low light and at most angles.
"...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
"...matter is it makes this screen, with relatively small characters, difficult to see when using in receptacles below knee level...." Read more
"...It's easy to read and understand though. Buttons are clearly marked...." Read more
"Works well. Flaws: plugs block the screen, lcd hard to read at most angles, it needs a backlight." Read more
Customers are mixed about the electricity. Some mention that it gets them thinking about energy efficiency, saves quite a bit of power, and is an essential tool to combat wasted energy. However, others say that it registers zero Watt or AMP and wastes electricity for no reason.
"...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
"...but it can also be used to save energy..." Read more
"...with this meter I have discovered that the Appliance energy rating is usually overly optimistic based on cost per Kwh that do not reflect any..." Read more
Customers are dissatisfied with the backlight of the tool. They say that the display is not backlit, so it's hard to tell which value is being displayed. They also say that it needs a new backlit display with a wider viewing angle. Some customers also mention that the LCD display is very dark and hard to read.
"...bring a light with you because it has no backlight either." Read more
"...I knew this model did not have a light and don't usually deduct for such features but the fact of the matter is it makes this screen, with..." Read more
"The display is kind of small and dark. I have to face it squarely and shine a light on it to read it...." Read more
"...: plugs block the screen, lcd hard to read at most angles, it needs a backlight." Read more
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So this is a great thing 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! Let everyone audit their own energy use. Every library or fire station should have these to lend out to people. Okay, off my soapbox now.
The device itself needs some improvements. I know this is the low-end model and I appreciate that it is fairly inexpensive. But there is no reason in the world for this thing to block both plugs in a standard outlet. Yes, you can get an extension cord, but the design should be better. I was a little annoyed that it has three prongs, but I admit they probably don't have a choice since some devices that you plug in to it will need a ground. Second, just plugged in to the wall, the Kill a Watt reads 3 watts. While that is great to know, it totally messes up all the readings. My VCR on standby reads 5, but 3 of that is the Kill a Watt. Why do I want to know that? It should not be counting itself and I imagine that it also includes its own power usage in the kilowatt-hour running total. Memory and backlighting would be fine additions, but I don't really want to pay extra for them.
So I think it can be useful for tracking down energy vampires (my laptop uses one sixth as much power as my desktop computer; I don't think I'll buy another desktop). It would be best if you can find somebody and borrow this from them, but if not this is a good purchase.
Several reviews show the receptacle melted after using them with appliances that draw a fair amount of current. This should not be happening because these units are fused with a SEFUSE Thermal cutoff (at least mine is). I found out by using the device in a manner I knew was a little risky. Temp environment was over 106*F ambient and knew I was using it potentially at its upper limit. Well, it did fail and instead of throwing it away, took it apart to see if it was beyond repair.
My rating is based on my experience with it over the last 3 years or so and the great service it has given me. I should probably add that the fact it failed under extreme use without melting the receptacle is also testament to its safety design and warrants some credit.
The SEFUSE has a TEMPERATURE rating in addition to in this case, a 15 AMP current rating. For replacement parts, I have seen these rated between 128*C to 240* C. I guess the theory is that it can be used up to it max rating as long as the temperature rating of the installed SEFUSE is not exceeded. If this thing starts to go above the SEFUSE rating, the SEFUSE should fail well before the monitor's receptacle starts melting! I would guess that the Kil-A-Watt folks *might* have used a SEFUSE with a higher temp rating in some production runs than the original design called for. It might also be possible that the SEFUSES received by the mfr were faulty or mislabled. There might be some warranty wiggle room here for those where the monitor started melting. It was designed not to do that!
My SEFUSE is *open* indicating that it did its job to prevent overheating the plug/unit. I have to look closer at it to see if I can determine the rating, otherwise I will have to take the new 4440 I just ordered apart and look at that one. There are ways to test to see if replacing the SEFUSE is the problem, but won't go into it here for liability reasons. SEFUSES are available on Amazon at a pack of 5 for under $10. Looks like a stout soldering iron will be needed to effect the repair if you want to pull the old leads from the board. I have done similar repairs by cutting the leads of the failed component and installing the replacement matching its lead length to the original installation. A much lesser wattage soldering iron will do the trick.
I like mine and needed a second one anyway. I am fairly certain replacing the SEFUSE in mine with one of the correct rating will restore original safety design and operation. I do not encourage user replacement of any components in this monitor. This review serves only to explain my experience and what I plan to do to try to correct it.
UPDATED 9/19/2019
The SEFUSE was in fact the issue. If one does a search on Disassembly and Repair of the Kil-A-Watt meter, a video will likely be available on the topic. The SEFUSE in this instance was rated at 99C (210F) in addition to its current rating. A word of caution here. I have seen this component with temp ratings spanning 77C to 240C at 15 amps. It is available with the same rating at 10 amps. The closest one I can find on Amazon is 94C (201F) at 15 amps. If you decide to take this on, be SURE you do not exceed 99C for the replacement component. Since it is available in such a broad range, it reinforces my theory somewhat that some production runs were using the wrong value on the low end (causing early failure) as well as perhaps on the high end (causing the case to melt). This doesn't excuse the failures, but offers some explanation as to what might be occurring. As long as the case is not damaged, this is likely an easy repair for someone with this type of skill. The 94C component is close enough for me.
UPDATE 9/23/2019
New meter arrived and the SEFUSE checks out at 15A/99C. Back of meter rated @1800W. MAX Power on packaging states 1875W. Would use the meter only for a quick measurement and NOT for sustained use much above 50% of its rating. Will just order the 94C SEFUSE from AMZ. to repair the old one.
Top reviews from other countries
Al conectarlo te indica la salida de corriente, conectad algún aparato y te indica su consumo, e incluso sabrás los kwh desde que lo dejes conectado hasta que se desconecte.
Con los botones sabrás el voltaje, watts/vA, Hz, amperes y kw/h
Reviewed in Mexico on February 23, 2018
Al conectarlo te indica la salida de corriente, conectad algún aparato y te indica su consumo, e incluso sabrás los kwh desde que lo dejes conectado hasta que se desconecte.
Con los botones sabrás el voltaje, watts/vA, Hz, amperes y kw/h
2. Seller support is poor and maker (P3) doesn't respond to emailed questions.
A waste of money.




































