low smoke free of halogen (LSOH)
The designations Low Smoke Zero Halogen (LSZH) or Low Smoke Free of Halogen (LSFOH) are used in cabling technology for the classification of cable material.
The LSZH evaluation is concerned with the behavior of thermoplastic materials in the event of fire, with the flammability or flame resistance of the sheathing material of transmission cables. Low smoke means that the cable material produces only a small amount of smoke in the event of a fire, and zero halogen means that it is halogen-free. In case of fire, such a cable material will not release corrosive or caustic acids.