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P3 P4400 Kill A Watt Electricity Usage Monitor

Brand: P3

8,659 ratings

-29% $28.19

List Price: $39.95

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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

P3 International P4460 Kill A Watt EZ Electricity Usage Monitor , grey
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WARNING:

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

What's in the box

usage monitor

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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Customer Rating	(8659)	(0)	(2187)	(601)	(233)	(451)
Price	$28.19	$19.03	$16.99	$11.99	$25.73	$22.77
Sold By	PORTABLE GUY	Wufome	PoniieDirect	BN-LINK	ANGGREK-Store-US	Inverters-R-US
Item Dimensions	8.4 x 2.1 x 6.1 inches	0 x 0 x 0 inches	3.74 x 1.85 x 2.36 inches	2.5 x 2 x 5 inches	9.45 x 3.54 x 3.54 inches	5.75 x 2.5 x 1.5 inches

Compare with similar items

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

‎6.4 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

‎Ivory

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

Maximum Weight Capacity

‎8 Ounces

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

8,659 ratings

4.6 out of 5 stars

Best Sellers Rank

#4,096 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#2 in Electrical Meter Sockets

Date First Available

October 2, 2001

Warranty & Support

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

Feedback

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Product guides and documents

Specification Sheet (PDF)

User Manual (PDF)

Important information

Legal Disclaimer

Warranty does not cover misuse of product.

Bulb Voltage

115 volts

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Customer Questions & Answers

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Customer reviews

5 star		76%
4 star		15%
3 star		4%
2 star		2%
1 star		3%

How customer reviews and ratings work

Reviews with images

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Top reviews from the United States

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beware of using with inverter power... a few seconds of modified sine wave killed mine off

Reviewed in the United States on July 14, 2017

Size: Original versionVerified Purchase

The standard by which all other power meters are judged. Can't go wrong with one of these, buy one.

at least, i THOUGHT you couldn't go wrong. But I just plugged mine into a 110v AC source which came from an inverter in a solar PV system, and the "modified sine wave" seems to have immediately fried it. It now is dead as a doornail.

So this is a little easter egg for those who actually read the reviews on devices with scads of reviews. Beware of using with modified wave (cheap) inverters. Worked fine with my pure sine wave inverter. Wish there had been instructions noting that it requires a pure sine wave.

544 people found this helpful

Six years ago...

Reviewed in the United States on August 11, 2017

Size: Original versionVerified Purchase

I bought a P4400 in 2011. It showed which household items were power vampires, some using as much power off as on. I could switch them off with power strips or unplug them when not needed.

By measuring the power consumption of internet-related equipment, I could estimate how much time a given UPS could give me in the event of a power failure.

I kept a spreadsheet of wattage of various items under different conditions, to help future troubleshooting. When my internet speeds slowed down, the P4400 showed me the culprit. The power consumption of the $4 power supply of my VOIP telephone adapter was abnormally high.

For the refrigerator, I measured KWH per day for a summer kitchen temperature and for a winter kitchen temperature. After that, the P4400 could show me if the refrigerator was still operating as efficiently, or maybe I needed to check for dust or ice.

If a refrigerator wasn’t cooling, the P4400 was a quick way to see if the compressor was drawing current.

Last year, I bought a smart charger for car batteries. It had no ammeter. Clipping in a multimeter would have risked a short, a disconnection, or damage to the meter. I plugged the charger into my P4400, and with the multimeter, I determined how many watts the charger needed for each amp out. Then I didn’t need the multimeter. By showing me input wattage, KWH, and time, the P4400 let me know output amps, amp hours, and charging time.

The other day, my P4400 was in the engine compartment of a truck as I charged the battery. In case of an unexpected shower, the hood was up only three inches. In a sudden, heavy shower, enough drops blew through the crack to wet the P4400. It still gave credible wattage readings, but not KWH or amps.

I bought another one immediately. The P4400 has proved its value.

Update: Last year I bought an electric chainsaw. I finally got around to using the P4400 to see if the manufacturer's horsepower claims are true. Apparently so. It also showed me how much voltage I was losing by using 150 feet of extension cords. The flashing display of the P4400 warned me that the current could damage it if I ran the saw more than a few seconds.

The manufacture recommends 14 gauge cord or larger. My cords aren't marked. To test, I used an electric skillet. Unlike the saw, it's a resistive load, and it doesn't draw enough current to endanger the meter. First I plugged the P4400 into an outlet and plugged the skillet into the P4400. I noted the voltage drop when I turned it on. Then I plugged an extension cord into the outlet and plugged the P4400 and skillet into the cord. I noted the voltage drop and the amps.

I subtracted the voltage drop at the outlet from the voltage drop at the end of the cord to determine how many volts I was losing in the cord. Dividing that by the amps gave me ohms. In the cord, current runs through the hot and the neutral in series, so the path is twice the length of the cord. To get ohms per foot, I divided the ohms by twice the cord length.

Knowing ohms per foot, I could look up the gauge online. My cords are 16 gauge. I can probably get 2.5 horsepower with them. I might get 2.75 horsepower if I upgraded to 14 gauge cords. I'm satisfied with 16 gauge.

148 people found this helpful

I am disappointed.

Reviewed in the United States on June 4, 2018

Size: Original versionVerified Purchase

I bought this in Oct 2017 and really have not used it much. Today I tried to measure the watt usage on a small AC unit. The ground pin on the 4400 came off. A call to tech support didn't help. They said it was out of warranty. I opened the unit up and cannot tell if the ground pin is screwed in or soldered. Not very strong in any event. I am disappointed. It should be noted that the ground pin is not connected to the circuit involved in the measurement. It actually just sits there. That said, it's a little unnerving to have your meter "fall apart". The ground pin should be substantial since it helps stabilize the meter while in use. Still disappointed. It may still work but that does not make my review any higher.
Update: After further examination, it appears that the ground was press fitted into the little circuit board. Not good at all. There wasn't much holding it onto the circuit board. It was going to fail for sure.

Customer image

246 people found this helpful

Big fan - except that the UL certification isn't there anymore and there's no replacement/customer support available.

Reviewed in the United States on November 29, 2017

Size: Original versionVerified Purchase

Rightly so, a continuous load of 1600W (max is 1800w) managed to kill it. I've checked and it seems that thermal fuse is blown. I've sent an email for a warranty replacement, but I'm not optimistic.

Update - no response after weeks. The products failure below it's rated design seems awfully suspicious. Especially given that the fuse in question is supposed to be reset when it cool down sufficiently. Seems like they cheaper out on the fuses. Be ready to treat these disposably.

260 people found this helpful

They should rename these units disposable single use monitors, already fried 2

Reviewed in the United States on March 17, 2018

Size: Original versionVerified Purchase

They should put a disclaimer on these, they are NOT meant for continuous monitoring of anything greater than 1400 watts or so. This thing fried after 3 days of continuous monitoring of 1475 watts. Even though they say the max is 1875VA, it won't monitor that for long. If you put anything close to 1800watts thru this it will likely melt the unit or the fuse. What this can do is check how much wattage you are using for a baseline then disconnect it.

221 people found this helpful

Top reviews from other countries

Rod

Not useable in UK

Reviewed in the United Kingdom on August 25, 2021

Size: Original versionVerified 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.

6 people found this helpful

John

Missing one major function to get 5 stars

Reviewed in Canada on October 18, 2018

Size: Original versionVerified Purchase

The only thing I wish this product did (and it's my fault for not reading the description fully) is remember the MAXIMUM wattage/amperage draw of what you have it plugged into. For an example, I have it hooked up to my sump pump to see how much power it draws so I can calculate how big of a generator to buy as a backup. However, when the pump activates, I only have about 5 seconds to read the display to determine how much power it's using. And, this number jumps up and down quickly so it's impossible to get an accurate reading. Also, if it's something that flucatutes the amount of power it uses (i.e. a DVR), you only get the reading that it happens to be drawing at the time you look at it. It would be more helpful to record the MAXIMUM power it drew over the course of the day. That way, it wouldn't matter when I looked at the display. I could tell what it's max power requirement is. Other than that, it seems well made, and performs all fuctions as described.

22 people found this helpful

Paul Daplyn

Three Stars for Lasting Only Three Years

Reviewed in Canada on August 15, 2017

Size: Original versionVerified Purchase

This review is for my original P3 Kill A Watt meter and it gets three stars for lasting only three years. I bought an exact replacement from Amazon. Hopefully it will last much longer. This is a very useful tool especially for finding out how much power is being wasted by a device when it is turned "off". An example would be touch lamps that are wasting 0.3 watts or 0.9 watts when turned "off". Another is a computer with a 300-watt power supply wasting 2.5 watts when turned "off" or a monitor wasting 0.5 watts when turned "off". Not significant amounts but some devices can waste even more such as external AC power adapters/chargers. That's why I put my computers and monitors on power bars to avoid this. That doesn't work with a touch lamp of course unless you are going away for a long period of time. Others have mentioned plugging it into an extension cord to check a device because you can't see the display very well at an angle. I have done the same myself many times. Others have complained of having no memory, which the more expensive model has. A backlit display would have been nice when working in a dark corner but I just used a trouble light to solve that. I was very satisfied with my original P3 Kill A Watt meter until it died after three years of use. Perhaps leaving it plugged in 24/7 for monitoring a device might have had something to do with it. I used the replacement Kill A Watt meter in a critical review of an LED bulb claiming to produce 1200 lumens, but to me appeared to be producing only 600 lumens. It was supposed to use 12 watts, but was actually using only 5.3 watts. Assuming an efficiency of 100 lumens per watt, the bulb was producing only 530 lumens. That's an estimate because you have to use an entirely different device for measuring light output, but the Kill A Watt meter substantiated my visual observation.

16 people found this helpful

Ettore

Save Electricity with Knowledge!

Reviewed in Canada on December 6, 2017

Size: Original versionVerified Purchase

This device has easily saved me enough to pay itself off 10x over. Ever wonder how much power something is drawing, and the specifications are absolutely useless? Are you tired of wondering why your electricity bills are astronomical for no reason whatsoever?

Buy this thing, and satisfy your OCD, and save yourself some cash along the way. Sure, if you plug in your $3,600 fridge, you're probably screwed if you find out it is a pig because it's too expensive to replace, but maybe you can call up the service tech and find out why its drawing 5x as much power as it says it should be. Maybe you plug in your block heater at night and find out you can heat your block in 30 minutes with a $4 timer vs having it burn your pennies away for 15hours.

I was already pretty thrifty with electricity, but I reduced our consumption by $30/month by pitching stupid items that were just wasting power, or replacing brutal devices, etc.

10 people found this helpful

SN

Works well. Helps you identify power usage.

Reviewed in Canada on February 22, 2019

Size: Original versionVerified Purchase

Why I Bought It

My utility keeps sending me letters telling me that I'm one of the heaviest electricity users in my neighborhood, so I decided to see what I can do to reduce my consumption. For example, the Kill A Wat told me that my work computer setup was baselining at 200W, so I now sleep/power down the computer as often as I can. I'm slowly trying it around the house to identify any other potential areas for savings.

The Good Parts

* Works very well
* Multiple types of readings (I only use the current wattage reading - did not really test the other functions)

Could Be Better

* Shape can block adjacent outlets depending on where you use it
* Doesn't have a battery. You lose your data when you unplug it

5 people found this helpful

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