This radiometer is a wearable personal monitor, having property of lower power consumption, small size .

It is used  for detecting the level of X or γ radiation field, especially for the personal radiative detection.This instrument is highly sensitive , it can responsible for environment background radiation. 

There is sound light circuit. Repetition rate of sounding and flashing can indicates radiation lever. When radiation level exceeds set dose rate, a steady tone and light alarm will occur. Up to counter tube blocking and over, steady tone and light alarm will still occur.