Watts Up AC Power Meter

If you're like me, and you want to know how what devices are electricity hogs, this unit is will do that for you. Even devices that cycle on and off. Look at your electric bill, find your rate, enter it in to the watts up? and you can tell almost instantly how much that device is costing you per month. For example, I was surprised to find out our cable box does not take up any more electricity when on or off. Our Christmas tree surprisingly took more power than we thought. We'll be checking out the led lights next year. Space heaters? I won't use them. I now turn up the thermostat. Next I will find out how much my wife's curling iron and hair dryer are costing us. She may be more careful not to leave them on over the weekend.

Excellent product. I'm currently using it to analyze energy consumption from every device in my house so we have more information to figure out ways to save some $$ in our electricity bill.It's easy to use, and its many modes give me the numbers I need. Whether I'm looking for watts, peak watts, watts/hour, montly watts/hour, the Watts Up Meter has it.Only con: it doesn't have a backup battery, so the recorded data is lost immediately once its disconnected.

Want to know how much energy your refrigerator uses, just plug it in to this device. For a low price, you can check on all appliances in your house. After checking one out from our public library on many occasions, I finally bought one. I use it particularly to record how much electricity my Nissan Leaf electric car uses.

I have cut my home electrical power consumption in half after I realized how much the many different electrical appliances, hot water circulation pump, TV, CD player, DVD players, VCR, etc use. Once you know what your electrical devices use, you can turn them off, via an external power switch, except when you are using them. Many devices use 10 30 watts of power in the off mode. I highly recommend this product.

Very good product. Functions as advertised. I recommend strongly!

Love the size, simplicity, and ease of use. Great product to create the awareness on what it cost to run small 120v equipment loads.

This company went out of the way to get me the product overnight! THANK YOU for the immediate customer service! I have since used this product and it works flawlessly as advertised. I would recommend this company and product to others.Thanks!Satisfied Customer

This review is for the "Watts Up? Pro" meter. If you are looking at the regular Watts Up? meter which has the simplest feature set of the 4 models, I highly suggest looking at the Pro model instead which isn't that much more expensive, and reviewing their website to note product differences.PROS:------(1)Excellent Current Wattage, Cumulative Watt Hours, and Max/Min Watts measurement EVEN AT LOW WATTAGE (<5w, <10w) when Amp measurement error increases.Wattage is furthermore measured 2,500 times per second regardless of how frequently you choose to log. Thus Cumulative Watt Hours and Max/Min Watts figures are going to be fairly accurate regardless of your log frequency.(2)The ability to position the meter at a COMFORTABLE READ POSITION and fit the plug into tight spots is very nice.(3)It has a measurement available called POWER CYCLE which counts up each time power is lost/regained, which of course if not accounted for could greatly affect accuracy.(4)It automatically puts the information into its own built in spreadsheet making my CUT AND PASTE INTO EXCEL easy. Of course it creates a delimited text file for import, too.(5)Found the meter EASY TO LEARN AND USE, and the software took at most 5-10 minutes to learn.(6)Most expected values tracked, though most folks will perhaps be mostly interested in:- Cumulative Watt Hours- Current Watts- Power Cycle (which tracks when power went off during measurement).Others measures: Min/Max Watts, Power Factor, Volt Amp (apparent PWR), Avg Mthly Kwh, Elapsed Time, Duty Cycle, Frequency (Hz), Cumulative Cost, Avg Mthly $, Line Voltage, Min/Max Volts, Current Amps, Min/Max Amps.CONS/SUGGESTIONS:--------------------- Please add a built-in clock like most other data loggers. Right now you note down the start or end time of the sampling and enter it in the program, or just put it into your spreadsheet as I do, however, a product like this should have a built-in clock to date/time tag the log. I will raise it to 5 stars when time logging is added.- More records storage would be nice. I'd like to sample with 10 second frequency for over a week, for example.TECH SUPPORT:---------------I called twice with a few questions, their tech support was both FRIENDLY and TECHNICALLY KNOWLEDGABLE.NOTES:-------- To increase the logging points and thus the time it has to log, reduce the variety of measured values (for example, to just Cumulative Watt Hours, Current Watts, and Power Cycle).- If you didn't note it from above, the Current Watts is an instantaneous measure, it isn't using the 2,500 samples/sec data that the cumulative watts and min/max watts are using.GET TO KNOW THE OTHERWATTS PRO METERS:-------------------------I suggest reviewing all models of the Watts Up line-up on their website before choosing a model. The models are:- Watts Up?- Watts Up? Pro- Watts Up? Pro ES- Watts Up? .NetI think of the "Pro" version as a sweet spot in the line-up. There are 4 models (listed above), 1 below it and 2 above it feature-wise. I would assume anyone interested in this kind of product would want at least the "Pro"'s features.If you expect to measure power that is either (A) sourced from an inverter sometimes or (B) affected by the source or environment by extreme levels of line noise, then you probably want the ".Net" model version (or for the latter buy a line filter). It has more shielding, more strategic separation of components, etc. If you have a problem with either case you will know right away as the data will go bonkers in an obvious way, I'm told.The "Pro ES" and ".Net" models store 4x the records of a "Pro" (120,000 vs. 30,000). For example, if you wanted to only track Cumulative Watt Hours, Current Watts, and Power Cycle then you can save 40,000 data points (120,000/3). With 1,440 mins and 86,400 secs in a day, you can determine which you need. Remember that the Cumulative Watt Hours and Min/Max Watts calculation is always based on the 2,500 samples/sec no matter the logging frequency.SUMMARY:----------Highly recommend these meters if they meet your needs.