CO2 fire extinguisher signs differ from regular extinguisher signs due to the dangers that carbon dioxide could pose to anyone exposed to it. CO2 fire extinguishing systems are valuable because they offer a firefighting solution that offers less damage and downtime than water systems. CO2 fire extinguisher signs are needed in entrances and common areas where the system is in place so that people are not harmed while the carbon dioxide chokes out the fire.
CO2 fire extinguisher signs are outlined in the NFPA 12 standard. Locator arrow labels are also available in addition to the warning signs.