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Plug-In Electricity Consumption Monitor

Plug-In Electricity Consumption Monitor Ideal to find the electricity consumption and running costs of:
   - Fridges and Freezers
   - Computers and all associated peripherals
   - Standby Costs of TV, DVD, computer, stereo, video, chargers etc
   - Washing Machines - Find the cost of your 30, 40, 60 degree wash
   - Dehumidifiers & Air Con units
   - Pond pumps, Swimming pool pumps (if they have a plug)
   - Televisions - CRT, LCD or Plasma
   - Anything that plugs into a wall socket !

Simply plug this monitor into the wall then plug the item into the monitor and you'll see exactly how much electricity it consumes. Once you have this figure it's easy to work out the running cost.

Be prepared for some surprises!

All the functions and how to use the monitor are described in detail below

Our Price: £17.95 inc VAT (£19.95 inc UK Delivery)

What will this monitor tell you and how do you use it ?

Take a closer look at the display


Mode 1 - Volts

Display Simply push the 'Volt' button to see the voltage of the supply.

In the average house it will show around 240v, if you have 3 phase it'll show around 230v.

Mode 2 - Amps

Display Push the 'Amp' button to see the number of Amps being drawn.

Handy to check what fuse rating a plug should have!

Mode 3 - Watts

Display Push the 'Watt' button and you'll see the number of watts currently being consumed.

In this example 2438 watts are being used, a value you might see if you measured a kettle.

A 60W light bulb would show around 60 watts.

Use this mode to measure household items on standby. We found the following in our house:

   13 watts - Sky+ on standby
   9 watts - DVD Player on standby
   9 watts - Lounge Stereo on standby
   9 watts - Kitchen TV on standby
   7 watts - VCR on standby
   2 watts - Lounge TV on standby

Also use this mode to measure the consumption of things such as:

   196 watts - Complete Computer System - Flat out processing video footage
   138 watts - Complete Computer System - Just Reading Emails
   90 watts - Lounge TV
   70 watts - Pond pump and filter
   53 watts - Cold Air Fan set to 'Fast'
   5 watts - TV Arial Booster
   3 watts - Radio Alarm Clock
   2 watts - Telephone Base Station
   2 watts - Mobile Phone Charger
   1 watt - iPod charger

Mode 4 - Hz

Display Push the 'Hz' button to see the frequency of your supply.

A normal UK reading is around 50 Hz.

Mode 5 - kWh (KiloWatt Hours) used

Display Push the 'KWH' button and you'll see the number of kWh's consumed since the monitor was last reset.

kWh is short for KiloWatt Hour and often abbreviated to just 'unit'. Your electricity bill will tell you your 'Cost per Unit'.

In this example, 3.69 kWh's have been used since the monitor was last reset.
For someone who pays 20p per unit, the cost of the electricity would be 20 x 3.69 = 74 pence.

Typically you would use this mode for 2 types of test:

1) Calculate the cost for a particular task

As an example, say you wanted to find out how much the electricity costs to do a 60 degree wash.

Reset the monitor by switching it off and on. Push the KWH button and you'll see 0.00 showing.

Plug the washing machine into the monitor and start the 60 degree wash.

If you were to watch the kWh display you would see the 0.00 start ticking up slowly as the electricity gets consumed.

Anytime after the wash has finished you can take a look at the monitor and you will see a value that will probably be around 0.5 kWh. This means you have used half a unit of electricity (half a kWh). You can look up the cost per unit on your electricity bill and work out the cost of the wash. e.g. half a unit at 20p per unit = 10p to do a 60 degrees wash.

While the wash is running you can change mode to Watts, Amps or any other and the kWh counter will still keep counting correctly.

2) Calculate daily running costs of fridges / freezers etc

Reset the monitor then plug in your fridge, freezer, dehumidifier, pond pump, electric blanket, air conditioner, computer, printer, monitor, television etc.

Let it run for 24 hours then take the reading from the monitor. From the kWh's used reading it's easy to work out the running costs per day, week, month & year.

Mode 6 - Hours

Display When you are in the 'KWH' display, push the 'Hour' button and you'll see how many hours ago the monitor was last reset.

Great if you forget what time of day you started a 24hr test.

In this example, the monitor was reset 10 Hours 28 minutes ago.

Mode 7 - PF Power Factor

Display For advanced use. When you are in the 'Hz' display, push the 'PF' button you'll see the Power Factor.

Read about Power Factor on the Wikipedia

Mode 8 - VA

Display For advanced use. When you are in the 'Watt' display, push the 'VA' button you'll see the Amps multiplied by the Voltage.

VoltAmps are Amps x Voltage
Watts are Amps x Voltage x Power Factor

This monitor is included in some of our Electricity Monitor Packs.

Our Price: £17.95 inc VAT (£19.95 inc UK Delivery)

Why choose this monitor ?

The first monitor we picked for this website had it's faults and we received complaints, so we set out to find the best plug-in electricity monitor on the market to replace it.

We purchased 6 different makes, compared them all and chose this one because we think it's the best.

Some monitors don't read below 10 watts and are useless for measuring standby costs.

This monitor has the easiest to read display.

Some monitors don't display 'Watts' correctly (they display VoltAmps and leave you to manually multiply their value by the Power Factor to give the real Watts reading!). This monior does all that for you.

This monitor has buttons marked Volt, Amp, Watt, Hz & kWh (see picture below), each reading is just a single button push away. Other monitors have a 'Mode' button which cycles through the various readings and can get frustrating at times.

Some monitors have the display below the plug so the wire gets in the way.

Simplicity is the key. This is the easiest monitor to use, there isn't even any setup to do. When it arrives in the post just open the box and it's ready to use.

This monitor doesn't have batteries so in a years time you won't find yourself searching around to find some LR44 button cells.

This monitor was the most expensive of the 6 we tested but as we wanted the best model available we chose it. At the time of writing this, our price for this monitor is £10 cheaper than on our suppliers website.

We know this monitor won't disappoint you.

Our Price: £17.95 inc VAT (£19.95 inc UK Delivery)

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