This company sells a radon meter that is supposed to register the levels of radon in your house. I have done regular tests with other kits and all have come back with low (acceptable) readings. This meter, however, gives false readings and even when I had it replaced, still new one doesn't work right. I paid over $100 and this is definitely a ripoff. Stay away from this company! You can buy a lot of kits and do periodically and know you are safe...unlike with this false reading meter.