FAQ section for the Efergy Elite/E2 Classic wireless energy monitors

elite classic 1ph
e2 classic

What type of communication protocol do the efergy energy monitors use ?

Our transmitters use a 433.5 MHZ (Megahertz) frequency to communicate with the display monitor.

Which is the transmission rate?

The transmission rate describes how often the transmitter sends a data signal to the monitor. Our transmitters using CT clamp sensors can be set to send energy data every 10secs/15secs/20secs. For transmitters with IR sensors it send data every 30 sec.

How far does the device transmit?

Transmission ranges aren’t an exact science… Our transmitters work up to 40-70 metres within the space of installation. But this will depend upon the environment in which it is working. If the building contains heavy ironwork in the walls, thick concrete walls or floors and other wireless technology devices, such as weather stations and wireless thermostats or other interference, then this can greatly impact and reduce our transmission ranges, or even cause the monitor to drop its link. If you have problems receiving a signal from the transmitter try moving the monitor around the building to find the optimum high signal areas.

How much energy do efergy monitors consume?

Really low. As an energy efficient company, we are making our units function on the lowest possible power consumption. On average our monitors use less than 0.001 kWh

With how much sensitivity is instant power displayed on the monitor?

All our monitors can display electricity consumption with a sensitivity of 1 Watt.

How do the monitors work out what i am spending on electricity?

All you need to do is to set your voltage or imp/kWh (depending on the model), input your electricity suppliers’ tariff charges (€,£,$/kWh), and the monitor will do the work out for you.

Will i lose the information in the event of a power cut or when i remove the batteries?

All the information is stored in an internal memory which saves and holds the data even in case of power cut or when you remove the batteries. On resetting the display you will lose all information stored in the memory. However, your time and date will remain unchanged.

Can i use rechargeable batteries to operate my monitor?

You can but it is not recommended. Our monitors work better with the typical alkaline batteries of 1.5V (with ~ 2400MhA), as they provide better power quality, which we advise to use.

How easy is to install an efergy monitor?

Our monitors couldn’t really be much simpler to install. Simply put the clamp onto the live mains cable in your fuse-box  (or attach the IR sensor onto your meter’s IR sensor) and put the display on your coffee table. Then program the display for your own requirements and that’s it! With the E2 Classic you can also install the elink software on your PC/MAC to get access to even more info.

How accurate are the efergy monitors?

Efergy monitors are accurate to within 10%, at least. In most of the cases, they are accurate to within 5% (IR versions are even more accurate, reaching accuracy within 1%). Most of this variation is due to the fluctuation in your electricity supply. The energy monitor is not intended to check the accuracy of your energy meter, but to provide real time feedback to aid energy saving. If however you are concerned about the safety of your electricity meter, please consult a qualified electrician.

How long should the batteries last?

Battery life depends upon the quality and condition of the batteries used, and the intervals between transmissions. In ideal conditions, they should last up to 18 months of battery life, expected that you have used a 2500MhA alkaline batteries. We recommend, though, to change batteries after 12 months, due to possible battery fluid leakage, which will damage the product and make its guarantee void.

Is the sensor supposed to be loose around the cable?

The sensor should fit loosely around the cable. Please do not pack it with anything to make it fit tighter. This could cause inaccurate readings and potentially be a safety hazard. If the sensor is too small for the cable, you may need to purchase our XL sensor, which will better fit on your cable.

What kind of information is displayed on the monitor?

All our monitors show power information (kW), cost information (€/£/$) and carbon emissions (KgCO2). Also, the provide your Average Consumption, as it is being calculated.

What do I do if live cable, neutral and ground (earth) all share the same sheath?

The MINI CT or XL sensor can only be clamped to a separate live wire. You would need to cut open the wire sheath and take out the live wire to clamp the sensor around. This would require extreme caution. We advise to look for a qualified electrician/electrical engineer to help you.

Can i position/install several of your monitors next to each other?

Yes you can. We recommend, though, to pay attention while on installation of multiple monitors, as you may mix up the displays with transmitters. In such case, you should install one each time and mark them, so you can later distinguish them.

How is parameter AVERAGE calculated?

The AVERAGE figures tend to take a long time to become an asset, but simply they are built from cumulative days of consumption over months divided by the total number of days in use.

Are the monitors three phase compatible?

Yes. if you have a three phase supply, or economy 7 meter, then you may require additional sensors. these can be simply plugged into the additional sensors at the base of the transmitter. However the monitor/display only shows consolidated average of the three phase consumption.

Up to what power can efergy monitors be used?

All our monitors can be used on the following power supplies:

  • Single Phase. For this you will need one MINI CT sensor, which is included in the box, and you will need to clip it onto the live feed cable
  • Three phase supply, of up to 100A/phase and cables of maximum outer diameter of 12mm. In this case you will need two extra MINI CT sensors, apart the one included in the box , and which will be clipped onto each phase.
  • Three phase supply, of up to 135A/phase and cables of outer diameter of 12-20mm. In this case you will need three XL sensors, which will be clipped onto each phase.

I use 3 sensors for 3-phase system. Shall I set the voltage to 230V, which is the voltage between phase and neutral, or 400V?

The Voltage setting depends on the load balance of your supply. The setting should be as follows:

  1. Uneven load balance between phases, the Voltage would be set at 230V
  2. Even load balance, the Voltage would be set at 400V

For higher reading accuracy, we recommend to use a voltmeter to measure the voltage between phase-neutral for single phase or phase-phase for 3-phase supplies.

How do I reset the display ( clear the data and start again)?

When the display is at the “ENERGY NOW” screen, push and hold the buttons HISTORY and MODE/SET for at least 2 sec, until the “CLR” appears on the screen. This will clear all the data information and return the display back to its original factory setup, however your time and date settings will not be affected. Warning! You will lose all information stored in the memory of the display.

I have four dashes ( ---- ) showing on the display. What does this mean?

Move the display closer to the transmitter and press the Link Button (on the transmitter and display). If the dashes remain on the display, this would indicate the transmitter and the receiver are not communicating.

Why I can't establish a link even after I changed the batteries in both the monitor and the transmitter?

Use the following steps to correct the problem:

CHECK 1 : We suggest taking the batteries out and leaving them out for a while, maybe for 5-10 minutes. The monitors sometimes build up static that needs to discharge in between battery charges. Try, also, while batteries are out, to press all buttons of the monitor several times. That will help the discharge. After that, place the batteries back and do the link process.

CHECK 2 : Make sure the new batteries are the recommended type (1.5V alkaline, preferably higher capacity type, e.g 2500MhA) and installed with correct polarity

CHECK 3: Ensure that the transmitter and monitor are paired correctly. This is done by pressing and holding the Link button on the back of the monitor, until the 4 dashes blink and then pressing once the link button on the transmitter. Make sure that the transmitter’s LED is blinking every few seconds (depending on the transmission mode is set at, e.g. Red: 10s, Orange: 15s, Green: 20s).

CHECK 4: Check if the transmitter is positioned inside a metal box. In this case the transmitter will not send data correctly and could not communicate properly with the display. Remove the transmitter from the metallic box and do the link process.

If none of the above fixes the link problem, please consult with our Technical Support team for further assistance.

If the transmitter is placed inside a metal Distribution Board will the meter still work?

No. If the transmitter is within a metal object (see the “Faraday Effect”) the signal quality reaching the display monitor might be either too weak or none at all. Thus it is highly recommended to place your transmitter outside the metal distribution box.

There is an icon like battery looking, blinking on the bottom side of the display. What does this means?

This is actually the battery level icon, which indicates that the level of your batteries is low. Check the following:

  • If the battery icon with three waves in front blinks, it represents that the battery level in the transmitter is low
  • If the battery icon without the waves, is blinking, it represents that the battery level of the display is low.

Backlight appears to work sometimes and not other times. Is my display broken?

No. The back-light is on a timer to save battery life. The display work at darker period of the day, when any buttons are pressed. The LED back-light will be activated from 18:00Hrs to 06:00Hrs (6pm to 6am).