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Energy saving smart meter monitor - Eco Friendly | 
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| Brand: Efergy
Category: CE
Buy New: £30.99
New (10) from £30.99
Rating:  4 reviews
Sales Rank: 1282
ASIN: B000W0434M
Availability: Usually dispatched within 1-2 business days
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| Features:
| • | track how much energy you use - save money and energy | | • | Easy to use handheld display | | • | installed in minutes |
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| Similar Items:
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| Editorial Reviews:
Product Description
The efergy energy saving smart meter is a wireless electricity meter that helps you track how much energy you use, encouraging a reduction in energy and cost - the monitor instantly gives you an accurate reading of how much energy you are consuming. Efergy tells you every 5 seconds how much power you are consuming, how much money this is costing you and an estimate of your personal contribution to the climate change. If you turn a set of lights ON or OFF, you can see INSTANTLY the change this has to your energy use. Once you have this information to hand means you, your family, or business, can visually see the benefits of saving energy. The data is stored daily in an easy to access CPU memory so you can actually see the effects of your changing energy habits. Comparing day-to-day usage gives you direct feedback of how daily changes of habit toward energy use can have an effect on costs and estimates the personal contribution to the climate change in terms of carbon emissions. The efergy meter is an excellent educational device. It is easy to use, displays personal energy consumption and increases awareness of important issues related to electricity, energy and the environment. The efergy smart meter can be safely installed in minutes with no need for expert knowledge or assistance.
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| Customer Reviews:
Worth getting because it makes you think! November 3, 2008
Mr. An Mcgavock
5 out of 5 found this review helpful
Agreed that it is not precisely accurate, but that is not the point of this well-priced gizmo. It is accurate enough to tell you what are high drain items which common-sense will tell you to use less often (cost, environment etc.) It also tells you the background level of usage (standby items etc.) which is the real benefit. As it makes you think about your usage, it will also help you to change your consumption patterns. Personally I think it would be a good idea for the power companies to subsidise these and offer them to customers...but then again, who am I kidding? Incidentally, it is ridiculously easy to set up, and the typo's in the instruction manual are amusing!
 Useful/interesting June 23, 2008
Tom
89 out of 90 found this review helpful
Nice product and well thought out. Quite a lot of options so worth
reading the manual. The memory function is very useful and puts
well ahead of other devices that do the same thing for the same price.
I notice comments on accuracy and precision of this device. This
device measures total load which will be higher than the house meter
reading for motors and transformers. The house meter only reads
resistive load only - and this is what you pay for. All the
electrical energy used must be generated though and the electricity
supplier just guesses the discrepancy. Since this error is a function
of how it measures the electricity used then all these type of meters
will show high readings for things with low power factor.
The accuracy of the device is dependent on the position of the sensor
placed on the live cable and can be influenced by the return/neutral
cable if this is very close. This can result in high readings. Try
to fix it to the live cable as far away as possible from the return/neutral
- but please do not move/bend cables. You can see electrical loads
as low as 1 or 2 watts being turned on/off (clock/mobile phone charger)
but don't expect to identify the exact load - just that it is small.
The precision is reasonable considering the cost of the device - I
am getting around 5% error from what I expect with a 2-3 inch separation
between sensor and neutral cable. So kettle which is actually
2.080kW registers as 2.0kW +/- 0.1kW
It returns the instantaneous power usage (every 5 seconds), and values
of energy use for day/week/year. It also shows cost or CO2 units if this
is more helpful so it is possible to check if the purchase of the
device has had any effect on your electricity usage. So
I think this is a well thought out gadget with many functions that does
what it is supposed to do. It is easy to set up with the right number
of options. Whether it will help me save electricity -
only time will tell.
 Don't waste your Money April 30, 2008
A. Horabin (uk)
22 out of 29 found this review helpful
I bought one of these units and am completely disappointed with it. I decided to find out how acturate the unit was by comparing its reading with what my actual electricity meter was reading each day. Over a period of two weeks the unit said I had used 101kwh. My electricity meter showed I had used only 31kwh for the same period.
Great Product March 14, 2008
Mark E-J (Notts, UK)
37 out of 38 found this review helpful
Simplicity to get up and running - only took a few minutes.
Forced myself to read through the instructions, which was time well spent. Found the meter easy to set-up - most of the defaults were fine for what we want. Hasn't saved us a fortune, but has made us aware of just how much electricity certain appliances use. The memory function is a real strong point of this gadget too. Most other meters don't seem to let you look back at usage over recent days. This one does and it is a really useful feature.
Not sure how long it will take to pay-back, but still very pleased with it.
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