Michiganians packed a state House panel hearing Tuesday to voice their concerns with so-called “smart meters” that transport utility usage information directly to companies. Many residents who testified in the nearly filled committee room said they worry that the new utility meters hurt their health and invade their privacy because they have no say in whether the company can install the particular kind of meter at their home unless they pay extra fees. Utility representatives countered that studies have shown their concerns are unfounded. Smarts meters give off low levels of radio-frequency radiation, but much less cell phones, according to the American Cancer Society, which adds that it’s not clear if the meters pose any increased cancer risk. The house panel was discussing a bill that would allow people to opt out if they didn't want a "smart meter."