Ex Howl Call Telephone

Ex Howl Call Telephones

The Ex Howl Call Telephone is a robust and durable sound-powered telephone system with highly efficient dynamic transmitter and receiver capsules offering communication without the need for a power supply. The FHF telephone is ideal for use in extreme environments, including areas with explosive atmospheres and fire-damp, such as mining, tunnelling, blast furnaces, offshore oil rigs and high-sea steamers. 

For further information about the FHF Ex Ferntel IP and FHF Weatherproof FernTel Ex Howl Call Telephone, please contact [email protected]

  • Telephony without power supply
  • Provides direct connection to switchboard, base, bridge or colleagues on the surface
  • Ideal for use in areas with explosive atmospheres and fire-damp
  • Call signal is generated by turning the rotary knob with an audio frequency dynamo
  • Sturdy, impact-resistant and weatherproof housing
  • 10km range 
  • Dimensions - 370 x 180 x 95 mm
  • Weight –
    • Hand telephone - 1.3 kg
    • Wall telephone - 2.3 kg
  • Durability -  IP 54
  • Wide range of accessories available
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