Tuya wifi 2 wire BUS system video door phone

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    Indoor monitor-NB62727

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support maximum 128 flats.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB62729

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support maximum 128 flats.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB62753

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support max.128 apartments.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB62753M

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support max.128 apartments.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB66727

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support maximum 128 flats.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB66753

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support remote access control by tuya smart application.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Indoor monitor-NB66753M

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support remote access control by tuya smart application.
    4)Snapshot, video record, message leaving.
    5)Central Power supply for the whole system.

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    Outdoor station-NB62251-1/2/3/4

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support max. 4 apartments.
    4)Central Power supply for the whole system.

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    Outdoor station-NB62251-1F/2F/3F

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support fingerprint access control. Work for 1/2/3 apartments.
    4)Snapshot, video record, message leaving.
    5)Central power supply for the whole system.

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    Outdoor station-NB62251-1F/2F/3F

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support fingerprint access control. Work for 1/2/3 apartments.
    4)Snapshot, video record, message leaving.
    5)Central power supply for the whole system.

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    Outdoor station-NB62251A-1/2/3/4

    1)2 wire non-polarity connection.
    2)Support intercom between flats.
    3)Support max. 4 apartments.
    4)Central Power supply for the whole system.