Need help?

M–F 8am to 6pm PST
1-877-210-9581
support@terrapass.com

Your shopping cart

Items: 0

Total: $0.00

Go to checkout »

Free Shipping for orders over $100, click for more details

Payment options

Secure shopping at TerraPass

Shipping information

Free shipping available on all orders over $100

USPS Priority Mail (3-4 days): $6 (under $100), $8.50 (over $100)

UPS Ground (up to 5 business days): charged at cost (calculated in checkout)

2-day and 1-day shipping is available at cost (see checkout for price)

See full shipping information and costs »

Returns policy

Return a product purchased from TerraPass in its original packaging within 30 days for a full refund. More info »

Safe shopping

HACKER SAFE certified sites prevent over 99.9% of hacker crime.

Protected by 128-bit secure encryption

TerraPass is a Green America company

Kill A Watt Electricity Usage Monitor

Kill A Watt Electricity Usage Monitor

Product code: KW-P4400

Customer rating:
(2 reviews)
Read reviews

Out of stock!

Price: $29.95

How much electricity do your home or office appliances use?

Connect your appliances into the Kill A Watt® and assess how efficient they are.

A large LCD display counts consumption by the Kilowatt-hour just like utility companies.

You can figure out your electrical expenses by the hour, day, week, month, even an entire year.

Monitor the quality of your power by displaying Voltage, Line Frequency, and Power Factor.

  • LCD display
  • cumulative killowatt-hour monitor
  • displays volts, amps, watts, Hz, VA
  • forecast your costs
  • accurate to within 0.2%

Customer Reviews

Write an online review and share your thoughts with other customers.

Agree w/Reviewer Amy, 07/15/2009
Reviewer: Julie (Pennsylvania)

This is a great and informative product! We purchased it about 2-3 years ago from TerraPass along with the SmartStrip for our computer. My father-in-law has this now and so it's getting good useage and I'll probably take it with me when I visit my folks (since I'm from a big family).

It's pretty interesting to see how much energy each appliance actually uses and to try to find ways to reduce the useage throughout the house. It's a nice tool to explain to kids (and grown ups) about how much energy is being used on a lamp with an incandescent bulb and then replace the bulb with a CFL and check the wattage useage.

Great item, easy to use, highly recommend, 02/04/2009
Reviewer: Amy (New York)

This is a great product & is priced right. Just plug it into an outlet & plug in an appliance to see how much energy something is using. Perfect for an energy audit.

The great thing is, you can press any button one-after-the-other to see all categories.

The buttons are (from left to right): Volts, Amps, Watts, Hz, KWH.

A great benefit of this device is that you can see what something uses (like a computer printer) in:
1. Off, but plugged in
2. Plugged in & in standby
3. Or actually in use

I thought my computer modem would save energy by pressing the button on top to disconnect the internet connection & have the lights go off. Nope, I was wrong, the same amount of power is used.

I found out my computer printer, that is an energy star model, doesn't use power when it is plugged in & turned off. There was also a difference between Standby & when it was printing. I turn off the printer when not in use, but don't have to unplug it - since it doesn't use power when it is off.

I recommend this item for anyone needing a more detailed energy usage for
1. Something plugged in, but not turned on.
2. Something in standby or energy saver mode.
3. Something plugged in & is in use.

Max Voltage: 125VAC 50/60HZ
Max Current: 15A
Max Power: 1875VA

Great for the novice or more technical person.