Ex phone ex Howl-Call FHF11327002

Telephone system operating in accordance with the dynamic principle. Without any external power supply or complicated equipment. In the areas of large furnaces, in the construction of tunnels or in mining areas, at sea, on a drilling platform or a deep ship - anywhere, which is not (yet) connected to any energy source, dynamic telephony is an ideal opportunity to combine. This surprisingly easy, but effective method is already used in many industrial areas for ordering materials or reporting faults, as well as with accidents at work, when a quick call for help is useful. The HOWL Call phone is a non -balancing and independent phone with highly efficient dynamic transmitter and receiver capsules, offering remote communication without power. The call signal is generated by turning the knob containing an audio frequency dynamo. All phones have a solid, impact and weather conditions. For years, they have proven themselves as a reliable choice for the mining and tunnel sectors, on construction sites and for industrial applications. The range is about 10 km.