Power Meter Plug Energy Monitor Watt Backlight LCD Display

Measures the power consumption accurately for whatever is plugged in. Unlike what some reviewers have said, when unplugging it, the cumulative readings (cost and kWh) ARE retained. I like the fact that you can turn off the display if you do not want it to stay on for the 10 minutes, 1 hour, 2 hour settings that you select. It seems very accurate. Measuring as small a power draw as 0.5W is a good feature. Many other plugs do not measure so low. The user interface and 'button press' logic are sensible and not complicated at all. Although I reset the overload setting to 2900W as it says you should do this, it is not needed. The plug works and displays at least 4000W (I have my kettle and toaster in the same plug that used in this product). Have now bought a second one. And now a third for my freezer. Addendum: The display is unreadable (black) unless the backlight is turned on. This was not an issue for me as I can turn it on when I need to read it. And if you need to see it without pressing a button then there is a 24 hour on backlight option. But the instructions and website picture are misleading on this function. Addendum 2: There is one (maybe more than one) item available in a double pack which look identical and are cheaper. BUT they are not the same. I ordered a pair but returned them. Differences spotted are: You cannot adjust the maximum power amount from 3680kW. Display stays on for 15 seconds and you cannot adjust this time, nor turn the display off before the 15 seconds expires. Resetting requires pushing the reset button, but no reset tool is provided. The reset also resets the cost per unit, wheresas the item being reviewed only reses the cost and power to date and the high/low power settings. The buttons are spongey and pressing them does not always work. But if price is key then this cheaper alternative is not too much of a downgrade.

Useful bit of kit, the back light is a must for these devices as often plugged in away from you, this stays on for a full ten minutes which is ideal to pop back and see how things are going. it can be programmed with your tariff cost and work out current usage but as using a spreadsheet I just use the kwh along with minutes used. Good investment and would recommend this model.

This was very easy to set up and use and is readable from shallow angles and from a distance. My unit (purchased Sept 2022), is slightly different from the one pictured in the ad as it has white alphanumeric against a blue screen. Accuracy was determined against a professional, calibrated power meter used by electricians and the calculations checked (power and cost). I entered my unit cost in pence to 2 decimal places, so it is calculated as pence, but it doesn’t look like it will cope with over 999.9 pence, so you will have to enter the unit cost in pounds losing some accuracy. (Something like 1.5% on my unit cost of 21.32 pence per KWh), so bear that in mind. Also, it says in my manual that it does not start to accumulate data if it is pulling less than 2 watts. This is not the case on my unit. My unit registers and accumulates time, wattage and cost immediately and calculates accordingly and my fire only pulls 0.8 watts in standby. A very good unit though and I will be buying another.

I have only had the meter for a week or so. We bought it to replace a much older unit (different model and manufacturer) that had mysteriously become very inaccurate. Everything so far has been quite pleasingly simple. The massive advantage over the old device is that this meter will integrate the power reading over a period of time to give total energy consumed in kWh. The old meter would only give current power consumption. If the equipment under test has fluctuating demand (e.g. anything with a temperature controlled heater or pump), it is very difficult to get a good idea of energy usage without this feature. I have compared the voltage reading against an accurate digital voltmeter and get agreement with 0.5%. I cannot be sure the current range is as accurate, because I could only compare it with a current clamp working at the lower end of its range, but the readings were consistent so I have no reason to doubt the plug-in meter. I do find it strange that nowhere on the unit is there any mention of the manufacturer or model number, although there is a label giving the electrical specifications. The instructions are very brief, as mentioned elsewhere, but then they'll get lost anyway! It is obvious how to operate (except I have not used the cost function. I am perfectly capable of multiplying the kWh buy the charge rate using a calculator). The most important point to remember ( I will probably write it on the unit) is that you can clear the readings and restart the timer by holding don the "FUNCTION" and "UP" buttons for a few seconds. For us it is really useful that we can clear the readings without having to interrupt power to the equipment for which we were measuring the power consumption. I have not had any need to press the "RESET" button yet. The price was very keen and it's doing a really good job for us so far. I have no reason not to give it 5 stars

Meter appears to work well, but the build quality isn't great. Removing the thin clear film from the display seemed to almost pull the display out of the casing.