The 2G EMF Meter is a device invented by Richard of Spectral Electronics. It works in the same way as the Guass Master only this one has a 2 way on/off rocker switch so you can keep it activated permenantly (The Guass Master automatically switched off after about 5 minutes).
The 2G has a backlit display with a guage reading from 0-6 mG (Milliguass) This is the usual reading that you can pick up Paranormal Activity on.
The 2G Meter has an earphone jack on the side which to me is the only disadvantage because you have to permenantly wear them to get an audiable signal (The Guass Master gives out a loud whistle sound when detecting EMF fluctuations).
On the other hand the 2G Meter is to our advantage because it is designed to detect only immediate EMF fluctuations and does not detect power sockets, hidden cables etc.
The best way to test out any EMF Meter is to turn on your TV and place it to the back - where the needle will almost certainly go off the scale (as my eardrums discovered the first time I tried that!!!)
I find the 2G EMF Meter a very handy piece of equipment which I will keep in my kit for many years.