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  1. ›
  2. Video Intercom
  3. ›
  4. 2 Wire IP
  5. ›
  6. 2-Wire Switch
  7. 2-Wire Switch
    Dahua

    2-Wire Switch

    Stock Code: VTNS2003B-2

    Extends the intercom line to the upper floors and gathers the indoor units at one point
    The cascade connection module of 2-wire video intercom systems. It sits on a guide rail, carries the line up to the higher floors and links indoor monitors and door stations on the same system.
    10 levelscascade ability
    20indoor monitors
    2door stations
    48 V DCPower Options
    10 / 100 MbpsRJ45 port speed
    Key features
    10levels
    Deep cascade connection
    The 2-wire port chains the line onward to the upper floors.
    20monitors
    Indoor units across the block
    Handles 20 indoor monitors and 2 door stations on the same system.
    2RJ45 ports
    Ethernet connection
    Two RJ45 ports link the system to the IP side.
    48V DC
    Rail-mounted supply
    Draws 1 A - 3 A of current and sits on a guide rail.
    15 or lessW
    Low consumption
    Keeps total draw inside the panel low while the kit runs.
    IN DAILY USE
    Direct panel mountingSits on the guide rail and takes little room in a low-voltage panel.
    Status tracking4 indicator lights show the state of the line once the panel cover opens.
    Usage areasApartment blocks·Intercom lines inside residential sites
    Technical Specification: Video Intercom 2-Wire Cascade Connection Module (DHI-VTNS2003B-2)
    Basic
    Communication Mode2-wire
    Status Indicator Light4
    Cascade Ability10 levels
    Operating Altitude0–3000 m
    Power Consumption≤ 15 W (KIT)
    Net Weight0.25 kg (0.55 lb)
    Gross Weight0.39 kg (0.86 lb)
    Port
    Cascade PortTwo 2-wire ports for cascade
    RJ45 PortTwo RJ45 ports (10 Mbps / 100 Mbps Ethernet)
    Device PortOne 2-wire device connection port
    General
    CasingPC + ABS
    Appearance ColorWhite
    Power Supply48 V DC, 1 A–3 A
    Power AdapterOptional
    InstallationGuide rail mount
    CertificationsCE; FCC; UL
    AccessoryPower converter cable
    Product Dimensions131.1 mm × 103 mm × 40 mm (5.16" × 4.06" × 1.57")
    Operating Temperature–10°C ~ +55°C (14°F ~ 131°F)
    Operating Humidity10%–95% (RH, non-condensing)

    Datasheet

    VTNS2003B-2 DATA

    12/12/2026

    Kullanım Kılavuzu

    VTNS2003B-2 KULLANIM KILAVUZU

    12/12/2026

    Teknik Çizim

    VTNS2003B-2 TEKNİK ÇİZİM

    12/12/2026

    VTNS2003B-2 TEKNİK ÇİZİM 2

    22/12/2026

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