The Acousticom 2 is a great compact RF meter! It showcases the severity level of the radiation with color coded LED lights. It also has an audio feature where you can hear the distinctive types of RF emissions. There is also a subtle alarm signal that sounds when the intensity level enters the extreme level. You can turn off the audio for taking readings discretely. It comes with a nice travel pouch. Great all around meter to get a good sense of RF radiation in an environment.