Funke+Huster•Fernsig GmbH is a a-hundred-year specialized mining manufacturer, and is also a leading manufacturer of weather- and explosion proof - optical/acoustical signaling devices - telephone sets, including IP - loudspeakers. Products are certified under quality management systems according to DIN ISO EN 9001, DIN ISO EN 14001 and 94/9/EG-ATEX.

FHF manufactures products for hazardous areas including telecommunication system, and visual and acoustic signal technology system. Two product systems are preference for coal mining companies including communication system type MR90 and process data transmission and automation system type ZM51.