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Efergy e2 Wireless Single Phase Electricity Monitor

The efergy e2 electricity monitor is simple to install and use. The sensor wirelessly sends information about the amount of electricity you are using to the display monitor. The monitor converts this into kilowatt-hours, the standard unit which the electricity company uses to charge you. This shows how much you are using in the same units that are on your bill. Input the amount your energy company charges you for each kilowatt-hour and you can see how much you are spending in electricity instantly. Make instant changes to save money, energy and the environment.

• Easy to set up and use.
• Portable or compact display, can be placed anywhere in the home.
• Download your energy data to your PC/Mac.
• Manage your energy on your PC/Mac with our elink software.
• Understand your carbon footprint.
• View your real time energy consumption (cost, CO2 and kWh).
• View historical daily, weekly or monthly data (cost, CO2 and kWh).
• View daily, weekly or monthly average (cost, CO2 and kWh).
• Select up to 2 tariff settings.
• Audio Alert if you exceed your set maximum consumption target.
• Up to 70m range.
• Portable or wall mountable display.
• 12 months minimum battery life (with 2400 mAh alkaline batteries).
• Mains or battery powered options for the display unit.

Download specifications here.

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Excl. Tax: R 1,601.75 Incl. Tax: R 1,826.00

Product Description


Micro - Generation
• Our monitors can be used to monitor micro-generation but do not provide net metering information. Our sensor will read the current going through your feed cable but will not ascertain the direction of the current. This means that at night, for example, if your inverter is using some electricity the monitor will show this and add it to the generation values.

Net Metering
• This product is not suitable for net metering installations. If you are looking for a net metering solution, please keep an eye on our website, we will launching our ennova solution soon this year and this is designed for net-metering consumers.

The elink software
• Download your energy consumption data to your Mac or PC and analyse it with our elink 2.2 software. View informative graphs, print or save reports as PDF files. Data may also be viewed using Excel or Numbers.

Key features
• See your energy information through both graphs and numbers.
• Print and save your energy data in Excel and PDF format.
• Compare different utility tariffs that could reduce your energy costs.
• Investigate your daily, historical as well as average daily demand.
• Add messages in order to explain any consumption change.
• Simulate changingsingle to dual tariff scheme and see benefits.
• Simulate what would happen if demand peaks were to shifted.
• Find out ideas on energy saving plans.

Technical Specifications
• Frequency - 433 MHz.
• Transmission Time - 6 sec, 12 sec or 18 sec.
• Transmission Range - 40m - 70m.
• Sensor Voltage Range - 90 V - 600 V.
• Measuring Current - 50mA - 95A.
• Memory - 64K.
• Pack Size H x W x D - 20.2 cm x 20.5 cm x 7 cm.
• Portable Display Unit Power - 3 X AAA Batteries.
• Transmitter Power - 3 X AA Batteries.
• elink software requirements OS - Windows XP/ Vista x 32 with SP3 for XP and SP1 for Vista, Mac OS X (elink 2), Platform: .Net framework 3.5 with SP1, Display minimum 800 px x 600px, 32 bit colour.

In the Box
• 1 x Elite portable display.
• 1 x Transmitter.
• 1 x Sensors.
• 1 x Instructions manual.
• 1 x Elink instructions manual.

Additional Information

Additional Information

Disclaimer Please note that stock availability is subject to prior sales. Prices exclude delivery. The image serves as an example of what the product looks like and may differ slightly in appearance.
Guarantee/ Warranty 12 month product warranty
Supply Single Phase
Sensor Type CT Sensor
Transmission Range 40 - 70m
Measuring Current 50 mA - 90 A (Max)
Measuring Impulses/ kWh No


Customer Reviews (4)

Fantastic product and even more!Review by Jan
I use this daily to size a PV system I want to install. The system works really well and the surprise to it all was that it also create an Excel spreadsheet with every report from where you can do just about anything with the hourly data that is being logged.
Really happy with my purchase and will recommend it (with the three point plug system) to anyone. I am sure you can save a lot of electricity already, without anything else. I know, I am saving already and would have paid for these two devices in few months from my savings. (Posted on 10/12/2014)
More accurate than the municipalityReview by Ivan du Plessis
I have purchase the electricity monitor from you.
This is giving me a more accurate reading than the municipality.

I am looking to build on a granny flat sometime in the future, and would like to go green with it.
I’ll be in contact with you. (Posted on 11/09/2013)
Great: Paid for its self in 1 month!Review by Julian Burke
This little gadget does exactly what it says. It is easy to set up and use.
After installing it and making a few changes to my electricity usage I saved the purchase price in my electricity bill in one month.
It is very interesting to see when and where your electricity goes.
(Posted on 10/09/2013)
Eye-opener!Review by Alex
I have been interested in Solar power for a while now, and have not yet been able to really get my head around what it would cost and what it would save. After reading "Solar Power for Dummies" which basically concludes that it's more about energy conservation than solar generation - I splashed out and bought this as the first bit of my investment towards sustainable and affordable power.

What an eye-opener! After initially setup it was VERY novel to turn on and off every single appliance in our home to see how much it was costing per hour, and after we eventually got round to changing the timing on our pool pump and geyser to save R x per month, the novelty wore off a bit.

Then a month later I downloaded the info and discovered that the new peak periods happened to be on the days the domestics were here - using the washing machine and tumble drier (which was meant for emergencies in winter only!) all the time - its amazing how the downloaded averages point out different info!

So it cost R 1 000, and didn't save anything directly. But it is the tool by which we assess every bit of power that we use and waste (our "spare" fridge freezer in the garage is being sold immediately!). Is it worth it? Yes, definitely.

What you can't measure, you can't manage! I highly recommend one of these products. (Posted on 18/04/2010)

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