If you think that someone is listening to your conversations or is watching you with a hidden camera, a bug detector will help you find the hidden microphone or camera. Our bug detectors act as sweepers, you can turn them on and walk through a room. If any frequencies are detected the bug detector will notify you. The bug detectors below are also radio frequency (RF) scanners as well. They will detect anything putting off RF energy. When searching your home or office for bugs be sure to search everywhere. Bugs come in many shapes and sizes some being smaller than a penny.