For application in hazardous areas where spark prevention is crucial. The device is rated for use
in area II 2G EEx ib IIB T4, i.e., for explosion class II B and temperature class T4. Permissible fluids
are: benzine, ethane, methane, town gas, butadine, ethyl alcohol, methanol, diesel fuel, ethylene,
propane, petroleum, heating oil, and hydrogen sulphide.