Question 1

What's included in the box?

Accepted Answer

The box contains:  two current-sensing clip-ons; one transmitter; one display unit; one USB-cable to connect the display unit to the computer; one instruction manual; one envelope that formerly held a software disc, but in my case provided a link to download a more recent version; batteries for the display unit; batteries for the transmitter.  Note: The system works without a PC, which may be viewed as a more convenient way to display the data.

Question 2

Does it display Amps and Watts? (no 220) I don't need any $ numbers as I'm off-grid. I want to know the draw from my batteries at night.

Accepted Answer

This measures AC power in watts and amps.  The Efergy True Power (version) is much more accurate as it calculates  power factors to give you more accurate results in watts and watt hours consumed.  This unit does not measure amps or volts.  If you want to monitor your batteries  and their charge status (measure amps, voltage  and track amp hours consumed) then you will want something more like Xantrex Link or Link pro, or Trimetric makes a power monitor system that is pretty popular.  These devices will monitor your amp draws and keeps track of the amp hours taken from your batteries (much like a gas gauge does on a car).

Question 3

Is this a useful tool?

Accepted Answer

I find it quite useful for my purposes:  (1) to monitor my monthly energy use and compare it to the useage reported on my billing, and (2) to monitor power consumption when I'm on my backup generator.  For this purpose, I purchased two additional pickup sensors and mounted them in my generator, so all I have to do is move the monitor from the house panel to the generator.

Question 4

How far can the display  be from the sensing unit?

Accepted Answer

The transmitters work up to around 130-230 ft within the home. But this will depend upon the environment in which it is working. If the building contains ironwork in the walls, thick concrete walls or floors and other wireless technology such as weather stations and wireless thermostats or other interference, then this can greatly reduce transmission ranges and possible 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 hi signal areas.

Manufacturer	Efergy
Part number	FBA_E2
Item Weight	771 g
Product Dimensions	20.57 x 19.56 x 5.84 cm; 771.11 g
Item model number	VC0S2_E2
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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efergyE2 Wireless Electricity Monitor

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