September 2026

Top 5 fire alarm and detection companies in Japan

Of the 13 fire alarm and detection companies in Japan listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.

  1. Joint #1

    Aiphone logo

    Aiphone

    Communication and life-safety systems, Nagoya since 1948.

    Manufacturer 100+ people Est. 1948 1 office
    Detection equipment manufacture Fire alarm systems
    Nagoya, Aichi View firm
  2. Joint #1

    Nittan logo

    Nittan

    Smoke detection engineered in Japan since 1954.

    Manufacturer 100+ people Est. 1954 1 office
    Detection equipment manufacture Fire alarm systems Foam suppression +2 more
    Tokyo, Tokyo View firm
  3. #3

    Nohmi Bosai logo

    Nohmi Bosai

    Total fire protection — detection, suppression and smoke control.

    Manufacturer 100+ people Est. 1944 1 office
    Detection equipment manufacture Fire alarm systems Foam suppression +3 more
    Tokyo, Tokyo View firm
  4. #4

    Hochiki Corporation logo

    Hochiki Corporation

    Fire detection and alarm systems since 1918.

    Manufacturer 100+ people Est. 1918 1 office
    Detection equipment manufacture Fire alarm systems Foam suppression +2 more
    Tokyo, Tokyo View firm
  5. Joint #5

    New Cosmos Electric logo

    New Cosmos Electric

    Gas sensing and residential fire detection.

    Manufacturer 100+ people Est. 1960 1 office
    Detection equipment manufacture Fire alarm systems
    Osaka, Osaka View firm
  6. Joint #5

    Secom logo

    Secom

    Japan's first security company — 24/7 alarm receiving and response.

    Maintenance 100+ people Est. 1962 1 office
    Alarm monitoring Fire alarm systems
    Tokyo, Tokyo View firm

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How the rankings work

Firms are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Firms with equal views share a rank.

A firm with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough firms are listed and viewed for it to be meaningful.

A ranking reflects interest in a firm's listing. It is not an endorsement, and it is not a check of a firm's competence, certification or accreditation.