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P3 P3IP4400, Kill A Watt Electricity Usage Monitor

by P3
4.5 out of 5 stars 184 customer reviews
| 5 answered questions

Price: CDN$ 32.99 & FREE Shipping. Details
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Sold by etailz CA and Fulfilled by Amazon. Gift-wrap available.
33 new from CDN$ 25.49
  • Large Lcd counts consumption by the kilowatt hour
  • Connects to household appliance and assesses its efficiency
  • Calculates electrical expenses by the day, week, month or year
  • Checks the quality of power by monitoring voltage, line frequency and power factor
  • Dim: 5.13-Inch Hx2.38-Inch Wx1.63-Inch D

There is a newer model of this item:


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Frequently Bought Together

  • P3 P3IP4400, Kill A Watt Electricity Usage Monitor
  • +
  • UNI-T UT204 True-RMS Auto-ranging AC/DC 400 Amp Clamp Meter
  • +
  • Extech 480172 AC Line Splitter
Total price: CDN$ 107.48
Buy the selected items together



System Requirements

  • Platform: Windows 7
  • Media: Tools & Hardware
  • Item Quantity: 1

Product Details

  • Product Dimensions: 21.6 x 16.5 x 7.6 cm ; 181 g
  • Shipping Weight: 181 g
  • Item model number: P4400
  • ASIN: B00009MDBU
  • Date first available at Amazon.ca: Feb. 22 2011
  • Average Customer Review: 4.5 out of 5 stars 184 customer reviews
  • Amazon Bestsellers Rank: #707 in Electronics (See Top 100 in Electronics)
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Product Description

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. Large LCD display will count consumption by the Kilowatt-hour, 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´ll know if it is time for a new refrigerator or if that old air conditioner is still saving you money.


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
Useful and helpful in tracking active and phantom electric usage around the house.

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.
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Verified Purchase
I was trying to find how many Amps some appliances were drawing , so I could decide on the size of a portable generator I needed to purchase to ensure my home was protected when a power failure came upon us .

We needed the sump pump to work & run the fan on the Natural Gas fire place to heat the house . Thanks to Kill a Watt I made an educated decision that a 1200 watt generator would keep our home safe from water damage & give us enough heat with out spending a fortune on a fancy generator . With funds limited we survived a 40 hr, outage .

Happy Camper
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Verified Purchase
I think this is a tremendous value. So many of us are uncertain how much power some of our appliances are using, even when they are "off" (such as devices with remote controls, which must maintain power to the receiver in case the remote is used to turn the device "on").

My only disappointment was that all the collected info disappears when you unplug the monitor - there's no "memory" feature, and it's sometimes difficult to see the readout if the unit is plugged in behind an appliance or in a floor outlet (just put a small extension cord between it and the outlet). But for $25, this is still a great buy, a great conversation piece, and something your friends and neighbours will all clamor to borrow (if you ever finish testing all your appliances!)
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Verified Purchase
No memory, backlight, energy cost calculation, or anything fancy, but it's cheap and works great! If you don't mind reading the display with a flashlight, and multiplying the number of kWh per the ¢/kWh cost yourself, you don't need the more expensive models.
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Verified Purchase
I used this to measure the usage of my 40 year old freezer, and my 21 YO fridge. I was suprised to see how little electricity they each used. However I will check the freezer again when the weather is hotter.

Can be hard to read when plugged into the wall, and looses all measurements when it is unplugged.

Friends want to borrow it to check their appliances.
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Verified Purchase
works perfect found we had one freezer was useing three times more power than the other freezers it gone probley saving several hundred dollers a year thanks roy
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Verified Purchase
this works amazing for metering my only dislike is it cant have your kwh cost programed to see the $ figure and no battery back up other than that i would say great product and i think the latest modle they make has the kwh input and batt back up so 5 stars for the newer model
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Verified Purchase
This thing is great. I can tell how much power anything in the house uses, on 120V of course. The ability to estimate costs is fantastic. Friends ask me to bring it to their house for some testing.

Must have for geeks!
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