Pros: Find out how much electricity a device uses. Calculate cost. Much cheaper than a "Kill-a-watt" and does practically the same thing.

Cons: None

Pros: The head unit is separate from the plug which is great.
The head unit can be attached to the plug in multiple configurations.

Cons: The LED is bright enough to warn passing ships and I don't live near the water.

Overall Review: I couldn't say if this unit is accurate as I don't have the equipment or knowledge to test that. I can say that it gives me a relative baseline. I know what my computer should measure at when everything is running right so if I see a lower number, I know that something stopped working.

Pros: -Good price after rebate. Got 2 of these.
-Settings work fine. Can calculate energy consumption in Watts/h, kW/day, kW,month and kW/year.
-let you set u your $ per kW rate and calculate how much an appliance cost you to run for an hour. Also for a day, month or year if the appliance is to run constantly during a given period.
-can calculate CO2 cost again for each of those periods.

Cons: -does not have screen back-light
-cable to receptacle not too long - probably about 3 ft. cannot be extended easily should there need be.

Pros: For a short while, like a gumdrop, provides the satisfaction of power awareness for a brief 24 hours and less than 1KW of electricity logged on the unit. Purchased two, glad I have a backup. I have 6 Rosewill Gold Power Supplies and each has served me well over the years. Also, many external USB drive enclosures that are rock-hard workhorses.

Cons: What a drag... Less than 24 hours later with a 50 watt load, the AFCI circuit breaker tripped the first time in 5 years. Removed the unit, let it "cool down", and the unit still works! The other unit, 12 feet away on a different circuit still pumping away at 190 watts. Maybe it needs more power to stay alive?

Overall Review: I would not recommend this Rosewill product to anyone reading these reviews. A throw away after initial readings. I have had gum drops last as long as this "hard-goods product". Sorry, Rosewill, time to change suppliers. If I could give less than one egg, my evaluation would have been lower.

Pros: Display can be separated from plug. Very nice.

Cons: If you're accumulating kWh, you can't read instantaneous watts. If you switch to instantaneous watts, it zeros out accumulated kWh. These are the two measurements users will most want to know, and it can only do one at a time. Really dumb design.

Overall Review: Display is not great contrast, but it has a fairly good angle of visibility, so it can be wall mounted even though it tilts upward. But the back is not flat so mounting it is tricky. I used double sided foam tape at the bottom of the display and it hasn't fallen off so far.

If there's a power failure, it loses any accumulated kWh.

Pros: Plug and play, shows the watts drawn by electrical devices.
I use it to measure how much power my PC draws.
My PC, Monitor and 5 external hard drives draw 130 watts at peak.

I like how the display is separate from the outlet unit,

Cons: Not much to dislike here, although I only use it to measure power consumption.
I don't use the other features of the product.

Overall Review: If I could change something in this product, I would make the green LED's less bright.

Recommended

Pros: -Easy to use
-Plug and play
-nice way to verify costs

Cons: -pretty bulky
-light has no on/off switch so the light remains on and is quite bright.

Overall Review: -I have not tested this products accuracy with a calibrated meter yet to verify the integrity of it's information it displays.

Pros: - It was cheap
- Had good reviews

Cons: - I didn't like it blowing up in my face
- I didn't like the damage to my APC Smart-UPS 5000 (SUA5000RMT5U)
- I didn't like my power cord being partially welded to the device

Overall Review: I purchased this device to see how much power my newly built plex media server was pulling. I'm a Systems Engineer for an MSP, and my home setup is a little more advance than most. This device was to sit between my APC Smart-UPS 5000 and my Plex Media Server (PMS). I powered down my PMS, and unplugged the power cord from the pigtail running to the UPS. I plugged the Rosewill RHSP-13001 into the pigtail. So far, so good. I plugged the powercord from my PMS into the Rosewill RHSP-13001, and get a nice flash of light accompanied by a deafening pop. The surge was so great that it not only tripped the UPS it was plugged into, but the 30A breaker the UPS is connected to as well, bringing down my entire network, servers and all.

All said and done, the power cord for my PMS is toast, as it was partially welded to the Rosewill RHSP-13001, and I lost 1 of 8 power ports on the back of my UPS. So far my PMS seems to be ok, but it's unknown if any damage was done to the PSU of that server.

Here's a picture of the product after this incident - http://i.imgur.com/6KTc7S0.jpg

Although I certainly will not recommend this product to anyone I know, it does have many more positive reviews than negative reviews. This incident has made me question whether the discounted price of Rosewill products is worth the risk in quality. I intend to contact Rosewill in regards to this incident. At this time, I would say that the way they handle the situation will determine whether I will purchase their products again in the future. I will provide an update in regards to their support.