General warning (exclamation)
Code: W01
Forklift trucks
Code: W02
Corrosive substance
Code: W03
Slippery surface
Code: W04
Explosive material
Code: W05
Toxic material
Code: W06
Skull & crossbones (toxic/poison)
Code: W07
Electric shock risk
Code: W08
Falling / trip hazard
Code: W09
Fire hazard / flammable
Code: W10
Biological hazard
Code: W11
Radioactive material
Code: W12
Oxidising substance
Code: W13
Overhead load / crane hazard
Code: W14
High temperature
Code: W15
Signal radar
Code: W16
Danger
Code: W17
Danger - unmanned machinery space
Code: W18
Danger - battery charging
Code: W19
Danger - low oxygen level
Code: W20