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Product Description
Measures voltage, amps, watts, volt-amps, frequency and power. Ideal for checking how much power your home appliances are using antime.
* POWER AND ENERGY MONITOR
* Colour:White
* Current, RMS max:15A
* Depth, external:36.7mm
* Digits, No. of:4
* Display:LCD
* Frequency, supply max:63Hz
* Frequency, supply min:47Hz
* Length / Height, external:130mm
* Pack Quantity:1
* Pins, No. of:3
* Power consumption:20VA
* Temp, op. max:40°C
* Temp, op. min:5°C
* Voltage, supply AC:250V
* Voltage, supply max:250V
* Voltage, supply min:180V
* Weight:145g
* Width, external:60mm
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Customer Reviews
Most Helpful Customer Reviews
282 of 287 people found the following review helpful
This energy and power monitor does what it says and does it pretty well. I tried two different plug-in meters and this one was by far the best.
I didn't bother with any of the devices that are attached to the live cable next to the house's main electricity meter, as these can't measure actual power consumed (i.e. what you're billed for). Only plug-in meters can give you an accurate measure of this, though of course you can't use them to directly measure e.g. showers or cookers as they don't have a plug (with a little effort though, you can use the meter to work out how much energy one revolution of your normal electricity meter corresponds to, which you can then use to measure consumption for items like showers that don't have a plug).
The meter is able to measure low currents and low powers fairly well, so low-consumption appliances or devices on standby can be measured accurately (unlike the other meter I tried: Power & Energy Monitor by Brennenstuhl). It measures current (A), actual power (W), apparent power (W), power factor, total energy (kWh) and usage time, and you can view any of these values within one or two button presses (some buttons toggle between two measures). The usage time measured doesn't depend on the current drawn by the appliance you're measuring, so for fridges/freezers that switch on and off, you see the total usage time which makes it easy to work out typical (average) power consumed.
The meter doesn't have batteries, so you have to read the measurements while it's plugged in. This is rarely a big problem, but occasionally you might have to get under a desk to get to the plug socket and the meter (you can always use an extension lead to help with this).
All the measurements are updated about every second, so you can see how power usage varies for things like TVs and PCs. Power values are shown to the nearest Watt, and the meter seems to give reliable readings at the bottom end of the range (1-5W). You can even look at apparent power and the power factor to get an estimated value of actual power that's not rounded up (e.g. apparent power of 3W, power factor 0.5 means actual power is 1.5). Measuring a low-energy light bulb rated at 11W gave an actual power reading of 11W, so it seems to give accurate readings. After measuring all appliances in the house, estimating power usage for the cooker/shower and estimating the amount of time each item is used on average, I got a total figure that matched well with our actual average daily usage. It was then easy to see how energy could be saved by using some appliances more carefully and by cutting down on standby.
Overall: a useful tool for measuring the power used by household appliances (when active or on standby), easy to use, accurate measurements of actual power consumed (including low currents/powers). Ideal for identifying the most energy-greedy appliances, and for working out where energy savings can be made.
I didn't bother with any of the devices that are attached to the live cable next to the house's main electricity meter, as these can't measure actual power consumed (i.e. what you're billed for). Only plug-in meters can give you an accurate measure of this, though of course you can't use them to directly measure e.g. showers or cookers as they don't have a plug (with a little effort though, you can use the meter to work out how much energy one revolution of your normal electricity meter corresponds to, which you can then use to measure consumption for items like showers that don't have a plug).
The meter is able to measure low currents and low powers fairly well, so low-consumption appliances or devices on standby can be measured accurately (unlike the other meter I tried: Power & Energy Monitor by Brennenstuhl). It measures current (A), actual power (W), apparent power (W), power factor, total energy (kWh) and usage time, and you can view any of these values within one or two button presses (some buttons toggle between two measures). The usage time measured doesn't depend on the current drawn by the appliance you're measuring, so for fridges/freezers that switch on and off, you see the total usage time which makes it easy to work out typical (average) power consumed.
The meter doesn't have batteries, so you have to read the measurements while it's plugged in. This is rarely a big problem, but occasionally you might have to get under a desk to get to the plug socket and the meter (you can always use an extension lead to help with this).
All the measurements are updated about every second, so you can see how power usage varies for things like TVs and PCs. Power values are shown to the nearest Watt, and the meter seems to give reliable readings at the bottom end of the range (1-5W). You can even look at apparent power and the power factor to get an estimated value of actual power that's not rounded up (e.g. apparent power of 3W, power factor 0.5 means actual power is 1.5). Measuring a low-energy light bulb rated at 11W gave an actual power reading of 11W, so it seems to give accurate readings. After measuring all appliances in the house, estimating power usage for the cooker/shower and estimating the amount of time each item is used on average, I got a total figure that matched well with our actual average daily usage. It was then easy to see how energy could be saved by using some appliances more carefully and by cutting down on standby.
Overall: a useful tool for measuring the power used by household appliances (when active or on standby), easy to use, accurate measurements of actual power consumed (including low currents/powers). Ideal for identifying the most energy-greedy appliances, and for working out where energy savings can be made.
60 of 61 people found the following review helpful
I've had one of the other meters (a Brennenestuhl) for 3 years, and was puzzled when it reported the standby power of my new Sony TV as 11.85 Watts, with a power factor (cos Phi) of 1.0. Sony say the standby power is 0.7 Watts, and I'm sure Trading Standards would be on to them quite quickly if the true figure was so wildly different.
I bought one of these Plug-In Power and Energy Monitor Meters after reading the other reviews (thank you, Howard Wright), and was not too surprised when it gave a reading of 1 Watt for the Sony TV (readings are to the nearest Watt). A pretty good example of the difference between 'precision' and 'accuracy' - 11.85 Watts is very precise but hopelessly inaccurate. 1 Watt is not very precise but is accurate enough to be useful.
There were similar huge discrepancies between the two meters with other appliances drawing small amounts of power (but which can add up).
It may not have a battery, and it's certainly awkward to read without an extension cord, but it's the best one available at the moment.
I bought one of these Plug-In Power and Energy Monitor Meters after reading the other reviews (thank you, Howard Wright), and was not too surprised when it gave a reading of 1 Watt for the Sony TV (readings are to the nearest Watt). A pretty good example of the difference between 'precision' and 'accuracy' - 11.85 Watts is very precise but hopelessly inaccurate. 1 Watt is not very precise but is accurate enough to be useful.
There were similar huge discrepancies between the two meters with other appliances drawing small amounts of power (but which can add up).
It may not have a battery, and it's certainly awkward to read without an extension cord, but it's the best one available at the moment.
22 of 22 people found the following review helpful
Amazon Verified Purchase
For anyone wondering, this is a Prodigit 2000MU, and the full data sheet can be found by doing a web search for "2000MU data sheet" (Sorry, Amazon won't allow me to post a direct link!).
This unit is less convenient to use than others on the market, mainly due to the lack of an internal battery, which means you need to be able to see the socket you're monitoring. On the other hand, it's significantly more accurate than competing units, particularly at low currents (important if you're interested in just how much those devices on standby are actually costing). It boasts a typical measurement error of just 0.5%, which is excellent. To put that in perspective, a similarly priced competitor claims 1.5%, and the very whizzy, (and, at three times the price, very expensive) Efergy E2 manages a dismal "<8%", despite being "wireless everything" and providing pretty graphs on your PC etc etc.
I decided that basic accuracy was more important to me than flashy features, and have no regrets for choosing this product.
The unit I purchased from EnergyMonitorWorld was supplied with a Maplin Electronics sticker.
This unit is less convenient to use than others on the market, mainly due to the lack of an internal battery, which means you need to be able to see the socket you're monitoring. On the other hand, it's significantly more accurate than competing units, particularly at low currents (important if you're interested in just how much those devices on standby are actually costing). It boasts a typical measurement error of just 0.5%, which is excellent. To put that in perspective, a similarly priced competitor claims 1.5%, and the very whizzy, (and, at three times the price, very expensive) Efergy E2 manages a dismal "<8%", despite being "wireless everything" and providing pretty graphs on your PC etc etc.
I decided that basic accuracy was more important to me than flashy features, and have no regrets for choosing this product.
The unit I purchased from EnergyMonitorWorld was supplied with a Maplin Electronics sticker.
Most Recent Customer Reviews
Plug-In Power and Energy Monitor
This Item works well and is easy to use. The only problem is that it does not hold the information when you unplug it from the wall socket or if there is a power cut or tripped... Read more
Published 2 months ago by Stephen Stolz
Great device which does what it should
I bought this to supplement the OWL meter attached power monitor I bought. This allows me to go round the house and check which appliances are taking how much power. Read more
Published 2 months ago by Mist of Time
Excellent
Very easy to use, I didn't even need the instructions. Lots of measured parameters make it very versatile. Read more
Published 2 months ago by Paul
Reliable, accurate, and money-saving
Conscious of rapidly rising energy prices, and wanting to cut costs, I was skeptical of the suggestion that I could save more by changing my usage patterns, than by changing my... Read more
Published 4 months ago by Alexander MacPhee
Energy monitor
A great product it does what it says on the box, I now know what I am useing on every electrical apliance in the house.
Published 5 months ago by Frank
Nice product
I did not use it a lot so I would not know about reliability but, I checked it against a memory oscilloscope to see how precise it is and the difference was about 5% max. Read more
Published 5 months ago by qwerty
great item
it does what it claims. it's simple (no need to read the instructions), just plug it in to the wall and plug whatever device into it. Read more
Published 5 months ago by Jody Miller
energy monitor
this product does as discribed no more no less a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a aa a a aa
Published 5 months ago by app
Useful and money-saving
This gadget is useful to track the electricity used by a particular appliance, especially if you want to compare it with another appliance e.g. coffee maker as opposed to kettle. Read more
Published 6 months ago by Doc Barbara
Good
OK so you're probably just like me and are thinking more green at the moment and are wondering what sort of cost each electrical device in your home uses. Read more
Published 7 months ago by M. Edelman
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