If the numbers on the unit stops at 398.60 and stays at that number, the room probably has a UHF type listening device planted.  If the numbers stops at 86.5 or somewhere in between 86.5 and 110, the room probably has an FM listening device planted.  If the numbers stops somewhere in between 900 and 2,400, the room probably has a wireless video hidden in the room and is transmitting video of yourself to another room. 

Bug Guard gives you peace of mind knowing that your important information is secured and will always be secured. Practical for any size business or for personal use. 

Pocket size, fits in your palm.  

Solid quality, reliable, super simple to use.

Statistics shows that 70% of companies that are bugged by a competitor without being detected goes bankrupt in 24 months or less.