Instruction ManualYHPTZ41B Series Explosion-proofPTZ Camera StationEx Marking:YHPTZ41B:II2G Ex db op is ⅡC T6 GbII2D Ex tb op is IIIC T80℃ DbYHPTZ41B-1:II2G Ex db IIC T6 GbII2D Ex tb IIIC T80℃ DbYHPTZ41B with optical fiber:II2G Ex db op is op pr IIC T6 GbII2D Ex tb op is op pr IIIC T80℃ DbYHPTZ41B-1 with optical fiber:II2G Ex db op pr IIC T6 GbII2D Ex tb op pr IIIC T80℃ DbCertificate numbers: Presafe 19 ATEX 15007X, IECEx PRE 19.0071X