New for 2009, the CM119 is the latest version of the popular OWL Wireless Energy Meter.
OWL, the Wireless Electricity Monitor, provides up to the second information on the amount of electricity you are using in terms of both power and cost. This means you can see in real time the benefits of turning off electrical devices at home. Whether it’s turning off at the plug rather than just using standby, or simply turning off a light, OWL shows you the cash impact of changing your habits and behaviours which could amount to savings of hundreds of pounds per year.
OWL now features a cumulative memory feature, making it easier than ever to monitor electricity usage.
The OWL wireless electricity Monitor will help you manage your electricity consumption and your carbon footprint by enabling you to see how much electricity you are using, as you use it,
Simple to install, OWL easily connects to your electrical supply without the need for an electrician.
Please note: the Owl products we stock are designed for use within the UK. This product is not intended for use in the United States of America and in the Republic of Ireland.
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Ethicalsuperstore.com product code: 78930
Shipping Weight: 650g
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The Owl CM119 Wireless Energy Monitor product ethics are indicated below. To learn more about these product ethics and to see related products, follow the links below.


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Product Classification - Green Energy Meters(5), Home Energy Monitors(8)
Hot Lists - Energy Savers(16)
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I got this because our electricity meter is in the cellar and we were getting ridiculous bills of £300 per quarter I wanted to know where the electric is getting used.
Installing this was very easy, one device clips over one of the big gray wires coming from the meter. And the display I put underneath the TV. The distance is something like 25 meters and it works fine. Setting the device up is a little complicated due to the way the menu works linking the two sender and receiver however is easy. But once this is set-up its quite impressive. I set it to show the total amount used for the quarter and you can see the bill in monetary terms slowly increasing.
I also set the big display at the top to show the cost of what is currently being used at that moment. So if I switch any device on, or switch anything off, from the TV to lights to kettles, the monetary value is instantly shown of how much is being used now. The biggest benefit it offers is to know how much each device is using and how much they use whilst they are in standby compared to being completely switched off. The device pays for itself and I was sceptical at first, but I thought anything that helps me to monitor and reduce bills is surely a good thing. Which it definitely is and will easily pay for itself.
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This e-View is rated: Helpful (49) Passionate (2)
Having purchased this product, I was a little apprehensive about connecting it to the electricity supply meter. However, a quick phone call to the Ethical Superstore where I spoke to a very helpful member of staff, was very reassuring. The connection was simplicity itself.
The results were initially quite frightening when we saw just how much electricity we were using on individual appliances, especially lighting.
My wife and I therefore made, and are still making, every effort to reduce the electricity useage in our home. I am convinced that before too long, the appliance will have paid for itself in reduced electricity useage, and therefore costs.
I strongly recommend this product with no reservations whatsoever.
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This e-View is rated: Helpful (38) Passionate (3)
This product does what it says on the tin. It's easy to install, the instructions are clear and easy to follow and I've found it very useful in calculating my electricity usage. Good value for money.
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This e-View is rated: Helpful (14) Passionate (1) Product Questions about the Owl CM119 Wireless Energy Monitorback to top »
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39 out of 42 people found this question and answer helpful
Mr asked this question on 26th Dec 2008
Q: The previous version was compatable with economy 7 because you could set the unit cost to match the time periods. However, my electricity tariff charges one rate for the first 225 units and another rate for units above 225. The previous version of the Owl could not differentiate between the number of units used. Can the new version???
A: On asking the manufacturer your question I received the following answer;
“OWL can be set to cater for up to four daily time-switched tariffs, such as is the case with economy 7.
What you are referring to is a tiered payment plan, rather than separate tariffs. This is a common misunderstanding and it is not possible to set OWL up to cater for this, because it is not possible to know at which point in time the higher tier starts. To overcome this most people set the cost rate to a figure just a little higher than the lower tier (maybe by 1 or 1.5 pence) and that will give a reasonable approximation.
Don’t forget that OWL is sold as an educational tool to help people change usage habits by observing the comparative readings as changes are made. It is not a calibrated instrument or an alternative to the domestic meter.”
I hope this helps.
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21 out of 21 people found this question and answer helpful
anonymous asked this question on 25th Feb 2009
Q: Our electricity meter is in a hallway outside the main flat. What is the range of the transmitter through walls etc?
A: Range will vary depending on the number and thickness of walls but typically it's up to 30 metres. John
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19 out of 20 people found this question and answer helpful
anonymous asked this question on 19th Dec 2008
Q: Is this compatible with Economy 7?
A: Yes it is!
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1 out of 1 people found this question and answer helpful
beegee asked this question on 9th Jan 2010
Q: My garage opener also uses 433mhz band. Will this interfere with the Owl, (or vice versa)?
A: Hi, Owl state that their transmitter is encoded to avoid interference with or from other devices. On occasion, some products can intefere with wireless appliances, but in general, it tends to be products which do not fully meet the appropriate standards which Owl produce goods to. Owl products are CE marked, tested and certified to meet R&TTE EU Directive for Wireless communications. I hope this helps. Robyn
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0 out of 0 people found this question and answer helpful
Vixter asked this question on 4th Feb 2010
Q: I would like to buy an electricity monitor & I am impressed with the reviews but wonder what the OWL CM119 is missing compared to the Wattson Home Energy Meter as it is so much cheaper???Please can you let me know?
A: Hi, the Wattson has a number of additional properties that the Owl CM119 does not have, firstly, the Wattson is PC and Mac compatible and can be connected to the computer via USB to transfer energy usage data. Secondly, the Wattson is compatible with home micro generation systems such as solar panels and wind turbines, and thirdly, the Wattson is a more design-led product with extra features such as ambient mood lighting and stylish shape.
I hope this helps. Robyn
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