KETOTEK Power Meter Plug Energy Monitor, Electricity Usage Monitor 11 Modes with LCD Display, Power Consumption Meter Socket Overload Alarm KWH Amp Volt Watt Meter

I chose this because it has a backlight. I can confirm this is very bright and very easy to read, so 5 stars. The monitor feels tough and well made. Another 5 stars. I cannot comment on its accuracy but have no reason to think it is unreliable. There are 3 alarms on the monitor that I will never need, and I don't know why anyone would. It is easy to set your "price per KwH" (the price that your electricity supplier is charging you) into the device, however, it is only possible to set this to 2 decimal places. But I think all the monitors are made like that. This is my third attempt at writing a review because I realised I made a mistake before. Initially I thought that you couldn’t use this monitor to test the electricity usage of 2 different appliances (eg a mobile phone and a toaster) without having to reset the monitor back to factory settings every time. I was wrong. You can. I’ve found that if you unplug this monitor for a while, it forgets everything except the unit price per KwH that you entered when you bought the monitor. Thus enabling you to test another appliance. This is excellent. Also if like me, your eyesight is imperfect, you will find the bright illuminated display to be exactly what you need. I highly recommend this product.

Great addition to any electrical item if you want to be sure of the amount of power it consumed and what that may cost. I found this easy to use, set up and record my usage. A very helpful tool if you feel the need. You will need a few if you want to check in on multiple appliances. The backlight version is good and is helpful if you want to save on energy in not putting the light on to read it.

This Electric Usage Monitor is a simple enough tool for finding out just how much electricity a particular appliance is using. It can be particularly useful for seeing how much an item on 'standby' can leach.Setting up is not difficult with just a few button presses to input the rate your energy company is charging for a unit of energy.There are 7 modes to this device, all listed above in the advert, with perhaps the most pertinent one being (in these days of astronomical energy prices) the actual cost of the power used on a device over a period of time.It fits well on a double socket and does not impair access to any switches. The display is uncluttered and very readable although if looked at from an angle it does become more difficult to read - a backlight might have helped in this respect.I assume this device is accurate. I do have a similar device from another brand that gives pretty similar readings, so I am happy with the read out this unit provides. There is a memory to this device which holds on to any settings while a socket is turned off, although how long this lasts I am not sure as up to now my device has been in constant use. It keeps the input cost per unit, time a particular appliance has been in use and such data, but not 'on the fly' data like current voltage.Likes:Not too large and does not overly obscure socket switchesLarge, clear displayEasy to use buttonsEasy to set upGood set of information availableDevice has a basic memory functionDislikes:None, other than there is no display backlight

This seems to be quite accurate as the wattage displayed is close to what the appliance should be using. I have used another meter which wasn't very close to what it should be. It's easy enough to use and setup, the only thing really to setup is setting the tariff. There are over options such as setting an alarm for cost and overload, but I haven't needed to use these so my set up was simple.It also comes with a small plastic tool for pressing the reset button which is handy. It doesn't have a backlight which isn't a problem for me, but some people may prefer to have this as it can make it easier to read.

The device is east to use and shows useful information. However, I have entered the unit cost for my electricity charge and it doesn't appear to show an overall cost for operating over a period of time.

Great little device which can calculate your electrical appliances usage cost.

Instructions could be better

No instructions