The Reduction Revolution Power Meter (model number RRPM03) is our easy-to-use plug-in power meter.
This online guide covers using and getting the most from this handy gadget.
You can also download a short PDF version here.
Not in the right place? See our related user guides for the older RRPM02 (2017-2023) and MS6108 models.
What the Power Meter Measures (& What it Means)
Plug any appliance into the power meter to find out how much electricity it uses and what it costs to operate.
Press the MODE button to scroll through the readings:
- V is voltage in volts. This is the grid-supplied voltage and is not something you can change.
- W is power usage in watts. This reading will vary up and down depending on what you are measuring and what mode your appliance is in.
- kWh is energy usage in kilowatt-hours. This is a cumulative reading. For context, check your electricity bill's total average kWh/day.
- Total $ is the operating cost in dollars. Like kWh, this total value will go up over time. Keep in mind that costs over one day may seem low. Multiply a daily total by 365 for an annual running cost estimate.
- $ is the electricity tariff in dollars and cents.
TIP: Appliances that draw higher Watts and kWh will impact your electricity bills the most.
How to Set Your Electricity Tariff (Optional)
Setting your electricity tariff is optional. The power meter will read watts (W) and kilowatt-hours (kWh) out of the box without any setup.
To enter your electricity tariff:
- Press and hold MODE for 3 seconds.
- Press SET to change the current number,
- Press MODE to move to the next digit,
- Press MODE for 3 seconds to save and exit.
If your tariffs vary by time of day, week, or year, we recommend entering an average figure.
TIP: If unsure, enter 00.35 for 35 cents per kWh.
Resetting the Power Meter's Readings
If you unplug the power meter, you will not lose any data. Your electricity tariff, total kWh, and cost remain saved until you next plug it in.
To reset the cumulative readings (kWh and Total $), press the 'R' button with the nib of a pen, pencil, or toothpick.
Your electricity tariff will not be lost when you press the reset button.
TIP: Monitor one appliance for 24 hours, note the readings, and reset the meter before moving on to your next appliance.
Advanced Power Monitoring Tips
Some appliances use a constant amount of power, and others vary over time.
Here are some tips to consider when measuring different types of appliances:
- Appliances that switch on and off throughout the day (like fridges & pumps). Plug the appliance into the power meter for at least 24 hours and then note down the total usage (kWh).
- Appliances that complete a set process (like kettles, dishwashers & washing machines). Review these over one complete cycle. In this way you can check the running cost of different settings or modes, such as a 'hot wash' versus a 'cold wash'. Check the total kWh used at the end of each test.
- Appliances used for a set period (like heaters & computers). Check these over their typical usage time. If you typically use the TV for 4 hours in the evening, measuring it over this period will indicate its contribution to your power bill.
- Electronics that are on all day in standby (like TVs & stereos). Spot-check how much power these items use in watts (W). Anything drawing above a few watts constantly can be switched off at the wall when not needed.
- Summer vs. winter appliances. Think about what you might have hiding in your cupboards that only get used for part of the year. Remember to test them out too!
TIP: Use the power meter on a short extension lead to aid usage when taking multiple or frequent measurements.
Want to Dig Deeper Into Your Energy Usage?
The power meter described above is ideal for assessing any plug-in appliances. But understanding your energy usage can go well beyond this. Here are some examples:
- Electricity Monitors allow you to track your whole property's energy usage. They're ideal for picking up large loads that the plug-in power meter will miss, like air conditioning, lighting, and hot water.
- Thermal Cameras allow you to 'see' in the infrared (heat energy) spectrum. They can help uncover electrical faults, missing insulation, water leaks, and other building issues.
- Other Power Meters & Electrical Sub Meters - options include hard-wired 'sub meters' for on-billing, meters with wifi connectivity, or a 15A power meter.
