Polycom KIRK 4080 User Giude page 58

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II 2G Equipment group II, zone 1 (gas)
II 3D Equipment group II, zone 2 (dust)
T60ºC Max. surface temperature of KIRK 4080 in use
Ex logo Specific marking of explosion protection
EEx KIRK 4080 is approved according to European standards
ib Intrinsic safe, ib category
IIC Equipment group II, ib group C (gas group C)
T3 Temperature group T3 (relevant for gas)
Demko Name of notified body/year/certification number
X Special warnings concerning the use of KIRK 4080 exist, please refer
to the users guide
CE 0539 CE marking and Demko identification number
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