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P3

P3 P4400 Kill A Watt Electricity Usage Monitor

  • Based on 8,115 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Everything-Aftermarket

Arrives Mar 19 – Mar 25
Order within 11 hours and 44 minutes
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Features

  • 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

Description

Size:Original version 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 SpecificationsAccuracy: +/- 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


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


Date First Available: October 2, 2001


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 19 – Mar 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • beware of using with inverter power... a few seconds of modified sine wave killed mine off
Size: Original version
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. ... show more
Reviewed in the United States on July 14, 2017 by D. White

  • I am disappointed.
Size: Original version
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. ... show more
Reviewed in the United States on June 4, 2018 by S. Locke

  • Big fan - except that the UL certification isn't there anymore and there's no replacement/customer support available.
Size: Original version
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. ... show more
Reviewed in the United States on November 29, 2017 by Ryerson

  • They should rename these units disposable single use monitors, already fried 2
Size: Original version
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. ... show more
Reviewed in the United States on March 17, 2018 by Steven Lee

  • Six years ago...
Size: Original version
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. ... show more
Reviewed in the United States on August 11, 2017 by Stephen Throop

  • Melted.
Size: Original version
I used it on my computer and it nearly melted. Computer was drawing 11 amps max and this device is rated to 15. Don't trust this with high currents for long amounts of time.
Reviewed in the United States on July 5, 2017 by James

  • Great for a little while, but don't recommend
Size: Original version
I don't "HATE" the product because it did work and do what I wanted, MY issue is the device suddenly quit working, and the makers have ingnored repeated attempts to contact. I would suggest some other brand.
Reviewed in the United States on April 16, 2018 by Jeff

  • Died after a week or so of use
Size: Original version
Completely died after a week or two of use. Nothing shows on the screen, and there no power is going to the appliance. Appliance still works fine plugging it in directly, without the Kill a Watt. Good thing I wasn't on vacation with fridge plugged into it, everything would have been spoiled.
Reviewed in the United States on January 5, 2018 by p&b

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