Customer Rating: 
Summary: catraveler
Comment: I purchased the Kill-a Watt P4400 a few years ago, and have used it numerous times to verify the power consumed by tv's,refrigerators, stereo equip., small A/C (less than 15amp). The only problem was a miss alignment of one of the reciptical pins, it was off center and the unit under test connector pin went down on the side instead of BETWEEN the recipticle contacts resulting in overheating the connector pin and partially melting some plastic. A slight adjustment and all is well. A good little tester!
Customer Rating:
Summary: Worked for a while
Comment: I purchased this unit about 6 months ago. It worked fine,
giving me information about how much electric power was
being used by various items in standby and active modes.
I recently used it again and found it malfunctioning.
The various readings were ~ 197Volt, 33Watts & 1.3Amps with
nothing connected.
Ya get what ya pay for...
Customer Rating:
Summary: Great Product!
Comment: This is a great product. It is convenient and very easy to use; and compared to my top-of-the-line DMM (HP), it has all the accuracy needed. I wish I'd had this years ago. If you have a breaker that often trips, this is the device that will identify the appliance that is the culprit.
Customer Rating:
Summary: Cool Energy-Saver
Comment: Nifty and easy to use. Had no idea my cordless telephone base draws 1-2 watts continuously!
Customer Rating:
Summary: Does what it says.. but not more
Comment: This product does let you know how many watts a given device is using, and that is quite handy. But you have to compute the average usage yourself by dividing the total killowatt hours used by the time the elapsed (the time is kept by the meter). The two larger flaws affect ease of use. The screen has no backlight, so you will need a flashlight to read it in many locations, and because of the placement of the plug that goes into the wall, you lose a socket when you put this device in. Both of these flaws could easily be fixed. We have a nightlight that uses only 0.3 watts, so a backlight could be added without significantly compromising the accuracy of this device.
Summary: catraveler
Comment: I purchased the Kill-a Watt P4400 a few years ago, and have used it numerous times to verify the power consumed by tv's,refrigerators, stereo equip., small A/C (less than 15amp). The only problem was a miss alignment of one of the reciptical pins, it was off center and the unit under test connector pin went down on the side instead of BETWEEN the recipticle contacts resulting in overheating the connector pin and partially melting some plastic. A slight adjustment and all is well. A good little tester!
Customer Rating:
Summary: Worked for a while
Comment: I purchased this unit about 6 months ago. It worked fine,
giving me information about how much electric power was
being used by various items in standby and active modes.
I recently used it again and found it malfunctioning.
The various readings were ~ 197Volt, 33Watts & 1.3Amps with
nothing connected.
Ya get what ya pay for...
Customer Rating:
Summary: Great Product!
Comment: This is a great product. It is convenient and very easy to use; and compared to my top-of-the-line DMM (HP), it has all the accuracy needed. I wish I'd had this years ago. If you have a breaker that often trips, this is the device that will identify the appliance that is the culprit.
Customer Rating:
Summary: Cool Energy-Saver
Comment: Nifty and easy to use. Had no idea my cordless telephone base draws 1-2 watts continuously!
Customer Rating:
Summary: Does what it says.. but not more
Comment: This product does let you know how many watts a given device is using, and that is quite handy. But you have to compute the average usage yourself by dividing the total killowatt hours used by the time the elapsed (the time is kept by the meter). The two larger flaws affect ease of use. The screen has no backlight, so you will need a flashlight to read it in many locations, and because of the placement of the plug that goes into the wall, you lose a socket when you put this device in. Both of these flaws could easily be fixed. We have a nightlight that uses only 0.3 watts, so a backlight could be added without significantly compromising the accuracy of this device.