PN2000 Plug-in Kilowatt Electricity Usage Monitor Electrical Power Consumption Watt Meter Tester

For me, a valuable feature is the ability to turn on/off the display backlight; I like to leave it on when testing, otherwise it will turn on when you select it and stays on long enough to get a reading then turns off. The light blue backlighting (when on) provides excellent contrast with the readings. The only negative comment about the display is the very small data identifiers (watt, cur, volt etc.) which makes reading them challenging more than a few inches away from the display. However in all fairness, this can also be said about many similar monitors.This monitor seems very accurate. I tested it using a resistive load (incandescent light bulb) of 100, 200 and 300 watts and the readings were constant so comparing the observed voltage, current and power correlated closely with the calculated power (voltage x current).If you are testing an inductive load such as anything with an electric motor, the displayed values were not as constant when viewed individually; they were constantly drifting within an expected range. If you attempt to measure reported verses calculated power under this circumstance, the observed voltage and current will not be correlated in time because you have to cycle though the selector buttons to read the values. The more the individual values vary the more the calculated power could vary and you might assume that it is not reporting accurately. Test it with a resistive load if you want to determine power measurement accuracy.It has other features that provide valuable information if you want to determine how much power a device is using over a protracted period of time, such as a refrigerator. From that you can determine the cost of the energy the device is using.Overall it seems to be put together well and I especially like the inclusion of a short extension cord that allows you to move it a bit closer to you when reading and as an aside, that also allows you access to both sockets on the receptacle when the monitor is plugged in. I found the instructions clear and easy to follow. If you are looking for a good electric monitor, I can easily recommend this model.

Plug an electrical device into the Poniie watt meter to measure the wattage, current, or voltage flowing through. You can also set the Poniie to measure the amount of kWh used over a period of time, good for determining how much an electrical device costs you during usage. The display on the Poniie is of high quality and brightness, making it easy to read.Product also comes with an extension cable of about a foot long, so that you don't block multiple outlets in a wall or power strip. It additionally comes with an operation manual.Ultimately, the Poniie watt meter does precisely what you'd expect, and perhaps a little beyond that, at a high level.

The Poniie PN2000 is an easy to use and simple device after you read the instructions and various customer reviews in order to figure out the menu settings. The device is well made, the digital read out is easy to read, and it works just as described.From the owners manual: The device can measure Watts (active power), Current (true RMS), Voltage (true RMS), Frequency, Cumulative Time (with hold over circuit memory), Electricity Consumption (with hold over circuit memory) and Power Factor (as Watts/Vrms*Arms).The important numbers to figure power being used by an electrical device are the "cumulative time" and the "energy consumption".You plug the meter in line with the device you want to monitor and then simply divide the cumulative time (this being the "stopwatch" time that the device is pulling power - if the electrical device is turned off for a while the timer does not keep adding minutes to the clock and picks up again when the device is turned back on, by the electrical consumption. The time is given in minutes so we find it easiest to figure out how many kilowatts were used by "the minute" and then multiply times 60 to get the power used in a kWh (kilowatt hour). For an item like a refrigerator that cycles on and off constantly you might want to leave the device connected for a lengthy period (perhaps 24 hours or longer) in order to get a more accurate power use profile as it cycles on, then off, then through a defrost cycle, and so on. Simple "on or off" devices might only need to be monitored for a half-hour or even less to find out the energy consumption.Unfortunately, like many of Amazon's sellers these days, the Poniie PN2000 seller sends the buyer e-mail asking them to write a review of their product if they like using it. E-mail from sellers requesting the purchaser write a review is what has ruined Amazon's best feature, and those reviews are always suspicious as not only no. Too bad that the seller doesn't have enough faith in their product and has to prompt buyers to write a review.To make it simple we divide the monthly electric bill total by the number of kilowatt hours used found on the monthly bill to get a per hour kW price, and then multiply that number times the kWh for the device we were monitoring (we're currently paying 0.12 cents per kWh).

Works great in the Philippines at 220v. I've become much more cost conscious as I'm close to retirement. This instrument lets you know how much an appliance affects your electric bill.I always knew air conditioners were the biggest culprit, but now I know not all fans are efficient and that my desktop computer with mid end GPU uses between 100-300w. My mini PC uses only 17w at most. Needless to say, I hardly use desktop PC anymore.I measured how monitor refresh rate affects wattage. It's about 2w per 25hz. I set my monitor to 75hz setting as I don't see much difference beyond that when watching videos etc.