• HIGH POWER WATT METER: Counts consumption by Kilowatt-hours, with high-power tolerance rated at Max.16A, compatible with 220v ac
  • REFINED ACCURACY: Built-in high precision current sensor. Ensures you the best accuracy-Class 1.0 with 0.01W, 0.01V and 0.001A resolution
  • BACK-LIGHT & MEMORY: With wide view angle, clear backlight large LCD Display and hold over circuit memory for cumulative kilowatt-hours
  • PROFESSIONAL KILOWATT METER: Start detection 0.20W, you can virtually monitor standby or working power dissipation of all your electronics
  • BUY WITH CONFIDENCE: 1-YEAR Warranty by Poniie; full ABS fire retardant material housing and comes with 14AWG heavy duty extension cord
  • EASY TO USE: Checks the quality of power by Watts (active power), Current (true RMS), Voltage (true RMS), Frequency (Hz) and Power Factor
  • CUMULATIVE TIME: CT only means the run time of the appliance, not the elapse time. It is a parameter to assess your appliance's working performance
  • WHAT YOU GET: 1x PN2000 Power Usage Monitor, 1x 1 Ft. Heavy Duty 14AWG Extension Cord. 1x User Manual; 1-Year Warranty by Poniie; FCC certified

The backlight on the display is extremely helpful. The display itself is very clear and I even left the scratched looking plastic film on it to keep the screen protected. When the backlight is on, you cannot see the scratches on the film. The unit is easy to use and works right out of the box. There is no estimated cost of electricity on this unit, but it's not a deal breaker for me, I can calculate it myself. What is most impressive is the accuracy of the meter reading and it can detect a resolution of 0.01W. I tested this by turning off my computer that it was hooked to and it was detecting 0.01W on the computer which told me that the computer was still drawing the slightest bit of power, which the computer is designed to do. The advantage of this is that you can plug devices into this meter when they off to see what devices draw the slightest bit of power even when they are turned off.

Works easy with interesting functions - even to double check what my UPS gives in A/C voltage and line hertz. Backlight makes reading behind an appliance possible. Worth buying 3ft 14 or 12 AWG short extension cord for power measurements to bring meter out for easier reading. Accuracy is at least within 0.2 watts - likely better, but I lack a lab reference for finer power data. Poniie customer service is outstanding. Update Dec 26, 2018: The PN2000 continues to deliver very useful measurements with convenience. Should have gotten one years ago.

As a computer geek, I have several UPS battery backups, of varying ages. I am always trying to pair up the right VA and wattage requirements with the right UPS unit. With the PN2000 I am finally able to measure the actual wattage of the computer(s) under varying loads, and am able to be confident that the matchup is correct. It is really easy to use, incredibly accurate, and the price is right! Actually saves me money by making sure I don't have to overbuy a larger unit unnecessarily.

To start, because there are many of these for sale in many different price points, let me clarify that the 5-stars is for meters at this price point. If you are looking for the best quality meter available with every function, you'll need to look at companies like Fluke (and also expect to pay $2000 - $5000!). I highly recommend this product if you are looking for a meter to use at home that will measure the amount of electricity a particular device uses when it is plugged into an outlet. I've used it for a few weeks and it appears to be accurate for all the measurements it makes. It is of decent quality construction and I appreciated the inclusion of a short extension cord to make connections easier than needing to go straight into the outlet, or straight into the device (for odd locations or shapes, like a wall wart). Nice little freebie to make life easier and enough imo to put this above competing products. The buttons and functions all work and the display is easy to read. I'm confident in the quality because I have used it with high-power devices for long periods of time (longer than recommended once (by accident!)) There are a lot of competing products in this price range, so it was difficult for me to choose, but I'm glad I chose this. Upon receipt of the product, there was one little hiccup for me. I don't know a lot about electricity and there was one part of the instruction manual I found confusing. I moved on to other chores and hadn't thought much about it when I received a follow-up email from the Seller, Aaron, checking to see if everything was okay. I told him that I didn't understand one of the features and he quickly replied with an explanation of the feature. Being a little slow on this subject, I told him I didn't really understand, (still). Most sellers probably would have just offered a return or refund at this point, but Aaron really went out of his way in two more emails to help me understand and helped me learn how to get the most out of this product. So, in a market where there are a lot of choices and all of the products are of similar quality, features and price, I can recommend this one because of the great customer service. Let's face it, dealing with sellers of electrical devices on Amazon can often be frustrating due to language barriers and communication difficulty. That is not the case here and I received exceptional customer service and the product has worked exactly as advertised.

I really like the fact that this meter is able to read very miniscule amounts of power where most meters would just read 0.0W. The fact that the meter has two decimal points (0.01W resolution) is also a big plus. The package also comes with a short extension cable such that it would not block off an outlet. While trivial, I like the fact that the seller has kept this in mind while selling this product. The product comes with a backlight that can be forced on if needed. Putting the meter in this mode makes it much easier to read readings at night, especially when done in a dark place. Attached you can see an example of a Level V and a Level VII charger without load connected to this meter. Notice that it's able to read both the idle wattage readings...

I bought this meter because I was curious how much energy my new whole-basement dehumidifier was using. The unit is well constructed with standard North American plug and receptacles. You can plug it directly into a wall or else use the included short extension cord. It's rated for 110-220V but doesn't include any adapters for the higher voltages. The accuracy is rated as Class 1.0. Basically that means 1% with some degradation for low currents and power factors other than 1 (in most equipment with motors it will probably be a little less than 1). Other than plugging the meter in and plugging the equipment being tested into it, no setup is required. The data that can be displayed are: EC (kWH) - Cumulative energy consumption. Can be reset CT (minutes) - cumulative time. It's not clear whether this timer will stop if the equipment is turned off completely, the 39 mA that my dehumidifier draws while it's idle is enough to keep it running continuously. Can be reset. Watt - current power consumption Cur - current (mA or A) Volt Freq - line frequency PF - Power factor. If you don't know what this is, it probably isn't very important to you. Volts X amps X PF = Watts, which is already calculated for you by the meter. I don't really mean to turn this into a math lesson but you can calculate other usage amounts from the figures above. For my dehumidifier I divided the consumption time (in minutes) by 1440 (the number of minutes in a day) and divided the electricity consumption by that result and found that the dehumidifier was consuming about 3 kWH per day. The power consumption when the unit is running is 720 watts (0.72 kW), by dividing the 3 kWH by that I calculated that the dehumidifier is running a little over 4 hours per day. It's winter here currently so the air is relatively dry, I expect those numbers to change with the seasons.

Fantastic product. Rare to find a Chinese made item that has common sense logic in design and quality in manufacture. My hats off to the people behind this product as this item is head and shoulders ahead of similar products. Well worth the few extra bucks to find something extremely well engineered, sensibly built with a high-end company backing it up. Have been using Kill-a-Watt units since they first came out years ago - there is no comparison. You'll love the easy to view screen with optional back-lighting and being able to measure fractions of a watt and milliamps of current.

Love this tool. It's exactly what I needed to measure how much electricity my dehumidifier was using. I have the dehumidifier in my basement set to 55% humidity, and its draining into a sink. It auto shuts off when it reaches the desired humidity, so I know its not running 24/7, but there's no way to be sure for exactly how long it runs ever day and no way to estimate how much electricity it was costing me to run it. I bought this meter, plugged it in, and it gives me a cumulative reading for as long as I leave it plugged in. It gives me the cumulative kWh, as well as the cumulative minutes so I can just do the math and use my kWh cost to figure out how much the appliance is using. I'm going to use it on my window AC units next to get an idea. For the price, this tool is great to have. Love the backlight feature as well. The Poniie company seems to have excellent support too, as I've received several emails thanking me for my purchase and offering any help that I need using the product.

I really like this Poniie PN2000 kilowatt meter. I have been using it to monitor the power usages of all my appliances in preparation of the installation of a solar pv system. So far I have only used it to monitor 120 volt outlets with regular plugs. It does not lose its values when the power goes off. It totals up the time while the unit is powered and totals the kwh. It switches easily between the instantaneous real time and cumulative electrical measurements. Another readout for cumulative amps would be handy, but can be calculated from the watts value. The short electrical cable that came with the meter was helpful but could be a little longer. I like the fact that you can turn on backlight for easier reading in dark locations. It’s fun to monitor appliances at various operating conditions, e.g. the refrigerator when cooling, during the defrost cycle, when the door is open and when nothing seems to be on. I’ve had this meter for a couple of weeks now and it has exceeded my expectations.

Surprisingly accurate. I use this with a variac in my small home lab. Definitly better than my p3 kill a watt. Much better resolution, display and backlight is great! Great for quick measurements and checking draw on certain devices. Photos checking line voltage vs my 5.5 digit bench top meter. Cannot ask for more out of a $26 device!