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What is a home electricity energy monitor?

save electricity in your home - help the environment and cut cost bill

A home electricity energy monitor is an easy way to see how much electricity you’re consuming - as you use it - and what it costs. It provides prompt, convenient feedback on electrical energy use. Some devices may also display cost of energy used, and estimates of greenhouse CO2 emissions in real time. It is also known as a "real time display". People who fit home energy monitors tend to find that their energy usage drops by between 5 percent and 15 percent in the first year of using them. Various studies have shown such a reduction in home energy use.

A clip from the monitor is attached to the cable from your electricity meter. The current is then measured and transmitted wirelessly to a monitor with display screen that you can keep anywhere in your house. The display portion is remote from the measurement, communicating with the sensor using a cable, power line communications, or using radio.

The electricity power monitor isn’t a substitute for the electricity bill, but it can provide a good indication of how much your electricity is costing if you update the monitor with any changes to your tariff. A possible means to reduce household energy consumption is to provide real-time feedback to homeowners so they can change their energy using behavior. In small-scale trials of home energy monitors, customers have typically saved 5 - 15 per cent in the first year of owning a monitor.

Manufacturer and Developer of
Electricity Monitor and Control System

The Energy Saving Trust estimates that households in the UK waste around eight per cent of their electricity bill on standby power – that’s about £40 a year for an average household. In addition, £170 million a year is wasted through leaving lights on in unused rooms.

Some energy suppliers provide free monitors with selected tariffs; ask your supplier for more information. Otherwise there are a number of retailers selling monitors with different functions. Sailwider-SmartPower is a Manufacturer and Developer of Electricity Monitor and Control System.

Generally, a home energy monitor measures energy usage in kilowatt-hours (kWh), and electric companies bill based on kWh used. The kilowatt hour is a measure of power, or watts, multiplied by an amount of time. Using 1,000 watts for one hour is one kilowatt.

Any item in a house that uses energy adds to the overall kilowatt usage of the household. Large appliances can add significant loads to the energy usage of a house, which will drive up total energy costs. A home energy monitor can be used to easily track down devices and appliances that are adding unnecessary kilowatt hours to the overall household energy usage.

An individual home energy monitor can be used between a device and the power outlet to measure the amount of energy that device is using. This is especially helpful for devices which spend time in standby or sleep mode, as the devices can still use a significant amount of energy while plugged in but turned off. Using a home energy monitor that tracks individual device usage can help a homeowner find which devices are better to unplug after use instead of leaving them plugged in and on standby.

There are also home energy monitors which monitor the entire house instead of individual appliances. These are helpful to get a picture of what the real-time energy use of an entire house is. Like the individual energy monitors, these can be used to determine the kWh usage of individual appliances and devices. If everything in the house that uses electricity is turned off, individual appliances can be turned on and the change in energy use can be observed on the whole home energy monitor.

By looking at your smart electricity monitor display, you can see how much electricity your house is using. Over time, you will get used to seeing how little electricity your house needs, and can tell when lights have been left on, or when other appliances have been left on by accident, which may be wasting electricity. You can then turn these energy wasting appliances off, saving you money, reducing your electricity consumption, and helping the environment by reducing your carbon footprint.

How energy monitors work

  1. You switch on your appliance.
  2. Alternating current (AC) carries electrical energy into it.
  3. The AC current flows back and forth along the power cable between the power outlet and your appliance.
  4. As the current changes, it creates a magnetic field all around the cable.
  5. Put your energy monitor's probe near the cable and the magnetic field causes a secondary alternating current to flow inside it.
  6. Your energy monitor measures the size of this secondary current and either converts it into a measurement in watts (W) or calculates the running cost per hour.

Electricity is having a difficult time—or, rather, making it has never been more tricky. Oil and gas are rapidly running out, coal's dirty, wind power and solar panels still aren't completely competitive, nuclear worries people. Add to that the difficult problem of global warming (the way Earth is slowly heating because of carbon dioxide produced when we consume energy) and you can see we're in a bit of bother. If you're troubled by the high cost of energy, or by the effect people are having on the planet, why not start using energy more wisely? You can drive more efficiently, for example, switch off your air-con, or turn down your room thermostat a degree or two. Another good thing you can do is try to use energy-efficient lamps and appliances that consume less electricity. If you've no idea how much electricity you're using, that's where electrical energy monitors can help!

Wireless electricity energy monitor

A wireless smart electricity monitor is a device used to monitor electricity consumption, adopting the wireless technology. In a typical wireless electricity monitor configuration, a unit that measures energy output is connected to the electricity meter in a home meter box, and that unit transmits information about energy consumption wirelessly to a display unit. The display unit shows the amount of power being used, the cost of the power and the greenhouse gas emissions caused by the electricity being consumed. Some units also display other information such as ambient temperature and humidity.

Wireless electricity monitors are easier to use than wired electricity monitors because they allow users to place the display unit anywhere in their homes. This way, users can frequently check the amount of energy being used without having to walk to a meter or run wires through their homes. Wireless electricity monitors are usually battery-operated, though some units have direct current (DC) adapters that enable them to be plugged into wall power.

Most people who use a wireless electricity monitor do so to reduce energy consumption. Having a constant visual reminder of how much energy is being used at any given time, how much the energy costs and how much of an effect the energy use has on the environment can help people stay mindful of their energy use and remind them to turn off appliances when they aren’t using them. The monitors can also be used to figure out how much energy particular machines and appliances are consuming so users can determine how they can best reduce their energy use.

Sometimes, a wireless electricity monitor only shows how much energy is currently being used, but many wireless electricity monitors also store usage data and enable users to review their daily, weekly and monthly energy use. This tracking ability can help users review how they’re using electricity, stay motivated to continue using less electricity and develop strategies for reducing consumption. A wireless electricity monitor is not very expensive, and many users say they recoup the cost of the monitor in just a month or two by using less energy.

Some wireless electricity monitors also have the ability to connect to a personal computer. The transmitter unit can stream energy usage data to a device connected to the computer, usually through a universal serial bus (USB) port. Computer software that comes with the data receiver typically enables detailed electricity tracking and reporting.

Sailwider-SmartPower Electricity Monitors

The basic figures contained within a monthly or quarterly electricity bill do not give you much information as to where your electricity is going - they just tell you how much you have used in total during that period and how much totally you need to pay. Therefore it is well worth considering purchasing an electricity usage monitor and using it to see exactly where all your hard-earned money is going.

China Wireless Electricity Energy Monitor from Sailwider-SmartPower

One great way to find out how much electricity each of your household appliances and electronic devices uses is with a wireless electricity power/energy monitor, which shows you in real time exactly how much money your total home or office electricity usage is costing you. These monitors can help you reduce your electricity consumption by as much as 20% simply by showing you what you are using. Sailwider-SmartPower is a developer and manufacturer of wireless electricity power monitor and controlling system.

uni-directional (1-way) electricity power energy monitors

Most electricity energy monitors in the market are uni-directional (1-way) only, that means you can only get energy consumption information from the monitor. The bi-directional (2-way) wireless electricity power monitoring and control system from Sailwider-SmartPower makes the user not only able to monitor the electricity usage, but also can easily remote control the connected electrical appliances wirelessly, providing great convenience to electricity efficiency management.

bi-directional (2-way) electricity power energy monitoring and control system


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