The ratio of number of residents in Gainesville to the number of sex offenders is 765 to 1. The number of registered sex offenders compared to the number of residents in this city is smaller than the state average. Nearest city with pop. 50,000+: Dale City, VA (18.1 miles , pop. 55,971).
Carbon monoxide alarms have a limited life, typically 5 to 7 years (some even less). Most people donât realize they need to replace a $25 - $75 item after several years.
How Carbon Monoxide (CO) Detectors Work. CO detectors measure CO levels in the environment and sound an alarm to warn you to ventilate the affected area. CO detectors are either battery operated or electric. Most CO detectors on the market use one of the following three sensor types.