Building intercom doorbell. The hand pressed a few buttons indiscriminately, causing the downstairs

Updated on Security door 2024-08-20
1 answers
  1. Anonymous users2024-01-24

    Traditional old-fashioned intercom system.

    Looking at the picture, it's still black and white.

    Directly replace the new Internet + building intercom system, it is recommended to refer to the Tedi cloud intercom system.

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