General CO Alarm is designed for use inside home or apartment not for industry special purpose. It should be avoid to be installed at below places. 1. In garages, kitchens, furnace rooms or in any extremely dusty, dirty or greasy areas. 2. Closer than 20 feet from a furnace or other fuel burning heat source, or fuel burning appliances like a water heater. 3. Within 5 feet of any cooking appliance. 4. In extremely humid areas. CO alarm should be installed at least 10 feet from a bath or...