Caution: This Room Is Protected by a CO₂ Fire Extinguisher System Safety Sign (M171) emergency exit left Fuel and chemical zones where

Fuel and chemical zones where “Smoking of Tobacco is harmful” reduces ignition risk

where relevant

The No Entry road sign (R3) is an R Series regulatory control sign used to prohibit vehicles from entering a specific road

Danger: No Smoking

Caution: This Room Is Protected by a CO₂ Fire Extinguisher System Safety Sign (M171) emergency exit left Fuel and chemical zones whereThe Caution: This Room Is Protected by a CO Fire Extinguisher System sign (M171) is a custom sign used to communicate a clear, site specific message at the exact point where it matters. Purpose and function This sign warns of the specific hazard described, Caution: This Room Is Protected by a CO Fire Extinguisher System. It helps people recognise the risk early, and reduces the chance of delayed emergency response and restricted evacuation.