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BS 8521:2009

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Specification for dual-tone multi-frequency (DTMF) signalling protocol for social alarm systems

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  • AS/NZS 4869.1:2006

    Maritime Survivor Locating Systems (MSLS) - Operating on 121.5 MHz

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    Maritime Survivor Locating Systems (MSLS) - Operating on frequencies other than 121.5 MHz

  • AS/NZS 4869.2:2010 A1


    Maritime Survivor Locating Systems (MSLS) - Operating on frequencies other than 121.5 MHz: Amendment 1:2013

  • AS/NZS 4869.3:2015


    Maritime survivor locating systems (MSLS) - Part 3: Maritime survivor locating devices (MSLD) - Operating on 156.575 MHz and/or 161.975 MHz/162.025 MHz

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BS 8521:2009

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$395.60 NZD

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