| 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 |
Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Instant streaming of thousands of movies and TV episodes with Prime Video
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
Other Sellers on Amazon
FREE Shipping
91% positive over last 12 months
& FREE Shipping
72% positive over last 12 months
FREE Shipping
Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
-
-
-
-
-
-
-
6 VIDEOS -
P3 P4400 Kill A Watt Electricity Usage Monitor
Learn more
- 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
There is a newer model of this item:
$29.99
(3,622)
Only 1 left in stock - order soon.
Frequently bought together

Similar items that may ship from close to you
WARNING:
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.
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
Additional Information
| ASIN | B00009MDBU |
|---|---|
| Customer Reviews |
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
Feedback
Videos
Videos for this product

2:20
Click to play video

P4400 vs P4600 Kill-A-Watt Energy Monitor
BeatTheBush

Videos for this product

2:51
Click to play video

Kill A Watt Electricity Usage Monitor Review
Jacob A

Videos for this product

4:03
Click to play video

KWH Meters COMPARED P3 vs PN2000 #thisorthat
Frugal Repair

Videos for this product

5:11
Click to play video

KWH Meters COMPARED P3 vs SURAIELEC #thisorthat
Frugal Repair

Videos for related products

3:09
Click to play video

Suraielec Watt Meter vs. Kill A Watt
BeatTheBush

Videos for related products

1:45
Click to play video

HBN Electricity Usage Monitor LCD Plug in Power Meter
Official HBN
Videos for related products

0:30
Click to play video

The only two-outlet volt/amp meter on the market
Fresh and Felicia

Videos for related products

1:32
Click to play video

Quick Demo Of The KILL-A-WATT ELECTRICITY USAGE MONITOR
Alan's Reviews

Videos for related products

6:33
Click to play video

customer review: kuman watt meter
kumanshop
Important information
Warranty does not cover misuse of product.
115 volts
To report an issue with this product, click here.
Looking for specific info?
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 AmazonReviews with images
Submit a report
- Harassment, profanity
- Spam, advertisement, promotions
- Given in exchange for cash, discounts
Sorry, there was an error
Please try again later.-
Top reviews
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
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!
(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.
Top reviews from other countries
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.













































