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Customer Reviews

4.2 out of 5 stars23
4.2 out of 5 stars
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on 29 June 2012
This is a great meter ideal for measuring different electrical items quite any eye opener when you see what the readings are.Green Lamp Power Meter Energy Monitor Esocket Plug-in KWH Watt Electricity Meter My meter stopped working after a week but green lamp immediately replaced it and I had a new one with in 24hours. Thank you green lap will certainly use you again.
One more comment the information with it and the only other review says you have to add a battery. Having taken the back off mine which is quite fiddly I found there is a built in battery so instructions could do with changing.
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on 6 April 2014
Good enough for finding out how much electricity is being used by an appliance. Instructions are poor English though, and laughable gobbledygook in parts. I will try and simplify them. (rechargeable battery is already installed and soldered in for a start, but might want some time to charge up. It's not one that can be easily replaced by the looks of it.)
First, plug it in to practise where you can see the display looking straight on. Looking from above it's hard to see. It is also not illuminated. A torch helps in some places. It might be best to use an extension on your lap to practise. If display is not working properly to start, instructions say press Reset. Unfortunately, it doesn't say that it only needs a gentle prod with something like a biro nib. I pushed it hard with a bit of wire and the button went right in and stuck in. I had to take the whole meter apart to release it.
Pressing any button should bring up the display. When display is on, a brief press of Function button changes display to the next mode. There are 7 to run through - Watts, KWh, Volts, Amps, Watts Lo, Watts Hi, Cost.
Watts and KWh (1000 watt hour) are the main interest. (Watts is level of power device is using. KWh is amount used). You can enter cost (16.36 pence/KWh for me), but it's easier to just X this by KWh used per day or however long you do the test. Time is recorded at top (starts off in secs then goes to mins and hrs. Days shown below KWh) but bear in mind it only records when power is used. This includes standby, but fridges go on and off and don't have standby. Mine only recorded 22hrs in a week, which is no use in cost calculation. Record your own start time on paper if need be. Hi and Lo display are just a record of highest and lowest watts the appliance used and can be ignored.
If you want to enter price (pence per KWh, from your bill), press cost button for 3 seconds until figures at bottom are blinking. Then press function briefly. This leaves one number blinking which is then changed with UP or DOWN button. Press function again to choose another number to change etc. If no button is pressed for 6 secs all blinking stops (on mine anyway), so you have to press cost for 3 secs again. So you have to be fairly quick. Ongoing cost is displayed below watts.
Pulling meter out of mains leaves recordings readable (if battery is working). Display goes off after about 10 secs to save battery power, but is brought back on by any button. When plugged back into mains it will carry on recording where it left off. Reset will clear all recordings.
So far I have only checked my medium sized fridge/freezer, which recorded 3.83 KWh in a week. 16.36 X 3.83 = 62.7 pence per week, which is far less than I thought. It must be other things that are costing me a bomb. Of course, you don't need a meter to work out that a 1KW heater would use 16.36 pence per hour (constantly on), and a 100 watt light bulb would use 1.636 pence per hour.
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on 7 June 2012
Use a short extension lead and enjoy this product. Interesting to learn what uses what. The rechargable batteries (included) mean you can read it any time until you reset it to test another item in the home. The display is easy instructions short and sweet. Well made and represents good value for money.
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on 8 March 2013
This product is a real eye opener, however I found the instructions a bit ambiguous in respect of the time factor. It reads as if it records how long it has been plugged in. In fact I think it records how long it has been recording power used? Still not sure about how to use it properly.
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on 4 November 2014
I've used this somewhat lightly, so have only superficial views of this so far. It does a good job of indicating the current electricity usage rate for the device you have plugged into it. The LCD screen does suffer from a particularly slight viewing angle. To tackle this, I coupled it with a simple extension lead (with the extension lead plugged into mains socket and then the energy monitor into the extension lead).

Does the job but don't expect an all singing all dancing well thought out product. It is far nearer the 'budget' end of the scale.
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on 9 May 2014
I bought it just to read Amp reading for my devices. But it give Amp readings with Power Factor so, it didn't help me. Good for wattage reading though.
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on 29 January 2015
My intended usage is to monitor the combined power consumption of appliances connected to the Inverter generator I have in place for use in the event of power cuts and thereby avoid overload. The Meter meets this requirement.
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on 28 March 2014
only wanted this for testing usage on electric devices at work and home, does the job perfectly.

great for calculating energy efficiency on replacement items or just seeing how much all your kit uses on standby, you will be surprised.
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on 21 November 2013
Good value. Basic functo
ion. Provides a lot of usless information on mean current and voltage. The main failing is that the readings are accumulative and cannot be easily reset in order to measure different appliances.
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on 23 October 2014
Large display, fairly accurate (compared with Corsair Link software Digital PSU stats). Would be better if backlit, but could not find one like that... Have two of these already and no issues with them.
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