The FHF Howl Call Telephone is a sound powered telephone system. The Howl Call Telephone works without an external power supply.
The Howl Call Telephone is sound-powered with a highly efficient dynamic transmitter and receiver capsules which offers communication without a power supply. The call signal is generated by turning the rotary knob with an audio frequency dynamo.
The FHF Howlcall telephone is equipped with an extremely sturdy, impact-resistant and weatherproof housing.
Features
Telephony without power supply
Protection degree IP 54
Wide range of accessories
For rough conditions
