OBSOLETE!Monofon, ATEX, IP68 with 2.5mm Earphone Jack, No longer available from Otto

IP68 and IIC rating. The speakermic has a very strong magnet and is therefor not suitable for areas with metal shaves. Alternative for GMMN1111A. Two-position volume control for operation in various noise environments. 2.5mm earphone jack for optional earphone accessories.