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Bus fire telephone extension

Bus fire telephone extension

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Fire emergency broadcast and telephone system

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    • Commodity name: Bus fire telephone extension

    Bus fire telephone extension

    Bus fire telephone extension is one of the components of the bus fire telephone system, and must be used with the bus fire telephone switchboard. In case of emergency, you can call the fire control switchboard by removing the phone handle. The local DIP switch preset 7-bit code, valid code range 1-99. Addresses 0 and greater than 99 are invalid. Coding can be set at the time of installation according to the needs of the project.

  • Static current < 1mA
    Operating current < 30mA
    Frequency range 300 ~ 3400Hz
    Address range 1 ~ 99
    Ringing sound level ≥ 70dB
    Humidity range ≤ 95% RH
    Operating temperature -10℃ ~ +50℃

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