ZHURUI PR10-E US15A Power Meter Plug/Home Power metering Socket/watt Meter/2.4 inch TFT Color LCD/0.5FS(New)

If you are looking at pure numbers and you want to know quickly the power being used - or over a longer period of time - this works quite nice. However note that this will go into the outlet - so it is potentially not as easy to read out.Assuming that the values are correct, the accuracy (in regards of digits) is much better than other devices I have seen.A problem is that you cannot really see the power consumption over time as a graph. There are other devices which can give you a nice graph as well - and they do this on your phone so that you do not have to rob underneath your desk in order to see the consumption..

I like this Power meter! Two things keep it from being five stars.1. Covers both outlets of a standard dual US AC outlet.2. Display goes to sleep and you have to push a button to get the display on again.There might be a way to stop the sleep mode but have not gone through the instructions to know if I can turn off sleep mode.Having the display for power to 0.01 is a great feature you will not find in most of these devices and none at the power level this device can measure.

Pros: Big easy to read color display that is backlit, and it "just works". I took it apart and was relatively impressed with the build quality too.Cons: It does run a little warm and it isn't UL listed so you have to use it at your own risk.My fridge seems to run the compressor way more often even after cleaning the coils and I was worried about how much this was costing me. This unit shows the all the stats (watts, amps, cost per day and cost total) so just leaving it in for a week showed me it was less than 70 cents a day which is OK I guess. I'll have to compare that with my next utility bill but I've got no reason to think it's inaccurate.It does have a lot of other features that I don't use. It has temperature, voltage, and current alarms which I turned off but if you lived in an area where you'd be concerned about power spikes or something that could be useful.The unit runs a little warm and I suspect that's mostly from the enormous relay inside it. I wish it had vents for cooling on the top instead of being completely sealed, ventilation might resolve that warming up issue entirely.It's easy to take apart but you do need those triangle-head security bits -- it doesn't standard Phillips or slotted head screws. However somewhat conveniently the internal CR2032 battery IS socketed so it's trivial to replace it when the battery dies some day.I hear these things shouldn't be used near their maximum rating so I wouldn't use it with any kind of heating device. Inside the wire is of a large gauge but soldered in place instead of using pin and socket connection so in a real bad situation I suppose wires could come loose and touch things.But for fridge, it's perfect. No problems!

I bought one of these back in November 2020, and my entire homelab's UPS is plugged into it... upside-down, because that's how it was designed, as some previous reviews have stated.I've used many P3, Kill-a-Watt, Watts-up meters in the past, and while they're great, they have a habit of going out of calibration and can't be fixed. Also, those two companies are no longer producing watt meters, so we're left with these options.I bought another this week and it came in today. I was preparing to have to disassemble it and resolder it into the correct orientation, but to my surprise, it was correctly oriented, right-side-up, right out of the box!They have listened to the feedback from their customers and addressed the single biggest complaint about the ergonomics of the adapter. Great work, ZHURUI!In addition to that, I noticed that the screen was much more responsive, snappier UI, and a touch more 'crisp', brighter, than the other one I bought, even set to the same brightness level.My only (minor) nitpick, is that you can't go to 5 or 6 digits when calibrating the per-kWh costs of your consumption. My power is $xx.yyy, but you can only go to 4 places total, which is not enough to get an accurate measurement of power to the thousandth place, like my utility company bills.Other than that, it's a fantastic device! Now if they can add an API or a way to datalog from the device straight into Prometheus or Grafana, I'd be even happier! (yes, I already do this with my Sonoff S31 + Tasmota custom firmware, but no display on those).Keep up the great work, evolving and listening to your customers!

I really wanted to like this meter. Picked it up in august, it's now early december.This thing's screen is great, the UI is a little annoying but passable, but there is one serious problem with it's accuracy. It's constantly inventing spurious values that are nowhere close to believable.As an example. I have a old Opteron Server PC here that presents a reasonably stable 400W load. Meter does fine with this one. I try it with a smaller xeon gold server that varys wildly between 95W and 240W based on load, which I've been familiar with watching on a Kill-a-watt EZ. Resetting it and letting it roll for 24H shows a single event peak of 245W and a single event low of 94W.Resetting the PR10-E-NEW, and letting it roll for 24H shows a single event peak of 1395W and a single event low of 15.3W. **what**. Watching it closely, whenever the PC load changes, a 'wrong' value is displayed on the screen, unchanging & "Autorange" is shown in the center of the screen for 1-3 seconds.Then it suddenly catches up and matches the kill-a-watt EZ's figure.Long story short, whenever this thing switches ranges, it will lose quite a significant number of data points. For a load that hovers right around two autorange thresholds, it will definitely not be accurate at the end of the hour, let alone the end of the month, or the end of a year.