This page of the Belkin Insight 2 Review looks further into features, a couple of minor limitations, and the App.
I previously pointed out that the WeMo app is a single app for all of its devices, not a separate one for the Insight. Tap the Insight icon in the app and it reports on current usage (watts/kw) monthly usage and monthly cost based on the cost per KW that you plug into the App. Of course, first and foremost it’s a “smart” external outlet so that you can power on and off devices plugged into it.
As mentioned previously WeMo makes another smart outlet that sells for $10 less, that lacks the energy measuring abilities.
The WeMo’s current usage capability seems to work very well, and seems reasonably accurate enough for any normal purpose I can think of. (I haven’t measured vs some other meter, but devices plugged in are indicated to draw pretty much what they claim, such as a 13 watt CFL measuring 12.7 watts.)
The monthly usage however, does suffer from a limitation. Let me say first, that this is a small thing in terms of dealing with your energy consumption. Here goes.
The Insight does not visibly measure below 2 watts. That is, if you have a device drawing say .25 watts such as as a device that is turned off – but drawing minimal power so that it will sense a Power on command from a remote control, or a command over over Wifi or Bluetooth or other type, it treats the device as in Standby mode when the Insight is “on.” Of course, if the switch is turned off. Those devices could not be turned on, by remote or wifi, etc. because the switch is off, so energy usage would be 0.
Now to give you the big picture let’s go back to those Lightify GardenSpot LED lights. Most of the time, the color of the day (ok – color of the night), say a blue-green, is running at about 30-40% of max brightness.
Now if that blue green light is measuring 5 watts at full brightness, then it’s going to be drawing less than 2 watts at 35% of full brightness. Devices drawing under 2 watts seem to mess up the monthly calculations. Of course the Belkin products seem to get updated from time to time, improving the product (and the app), so before I, or you know it, this may be corrected.
Check out this screen shot.

When my outside lights are on, which is every night, they are normally on for at least 5 hours. Yet the App indicates that the last time it was on normally it was on for only 6 minutes. I had been fooling with the color schemes, checking things for this review. It was on as usual, so around that 5 hour 37 minute average, but it said that it was only on for 6 minutes.
Further investigation last night discovered this: If I set the lights so that the power consumption is <2 watts, the Last On For timer (on the left in green) does not record time. If I brighten the lights so that they are drawing 2 watts or more, the timer runs as expected, in fact, second by second.
So, I have concluded that calculations that rely on one of the timers does not compute usage if the power consumption is below 2. This can definitely screw up monthly calculations with a low power consumption device like those outside lights on dimmers.
That pretty much is the end of the conversation, and I’ve probably spent more time on it than it deserves, because of this: Is anyone really going to complain when the only time it doesn’t seem to be accurate is when measuring a device, that even if on 24/7 365, will cost between $1 or $6 per year depending on your incremental electric cost?
I had no issues with the calculations of other devices I’ve measured – other lights, pinball machine, small refrigerator, my Sonos system, etc.
So, the good news: This issue only seems to occur with devices which draw less than 2 watts when on.
Art's been reviewing high tech products and editing their reviews for 15 years. He launched his first website presenting solutions.com (sold in 2003) in early 1995 when there were only a few thousand .coms. He launched ProjectorReviews.com in 2000, and started planning Smarterhomeautomation.com back in 2011.
Art's goal is to provide in-depth reviews on the latest and hottest products that fit into the Smart Home, aka Home Automation, as well as insightful articles to educate people into what's available, what makes the most sense, and where the market is going, so people can better plan, and implement their goals for energy efficient, convenient, and downright "cool" capabilities.
Ancient history: Born in Allentown PA, Graduated 1972. Sold and managed stereo stores (and did a little surfing) in the early, mid-70's before getting into computers and more AV. Managed the first computers store in Pa, starting in 1979 (not the first manager). Moved to selling computers to major accounts. Then moved west to SF area, for a four year stint with Epson starting in 1982, then left for one of the early large venture backed start-ups in the Silicon Valley - Presentation Technologies. Left there to start up Presenting Solutions, which became the first projector focused reseller on the internet (Jan 1995). Married Lori in 1990, and have been enjoying our daughter Lisa, since 1992! Presently living, and working in San Clemente, CA.