Dahua VTNS2003B-2 Tweedraads switch

The VTNS2003B-2 is a switch for products from the new generation of Dahua Video Intercom products. The communication of this generation of video intercom products is over the SIP protocol. This protocol ensures a good voice-listening connection and offers third-party integration possibilities. The 2-wire technology simplifies installation and offers the possibility of connecting several opposts to a single cable.

Pluspunten:

Multiple devices on one 2-wire connection: It is possible with this generation to serialise multiple products from each other via the "out" port. The switches can also be interconnected via 2 wires. However, each switch must be supplied with 48VDC separately.
2 wires for one system: Both the power supply for the indoor and outdoor stations and the data transmission are through the same cable. Thereby, the stations can be put on one line, making 2-wires sufficient for a working system.
TCP-IP network protocol: Despite the 2-wire technology, the posts just work as regular network products. So this means that each post should be given its own unique IP address. A big advantage of this is that posts connected to this 2-wire switch can be combined with the PoE products and the 2-wire products from the previous generation.
Suitable for DMSS and DSS Pro: Because the 2-wire products are simply part of the network, they can also be applied with the DMSS app or DSS Pro management software

Aandachtspunten:

Not suitable for all 2-wire products: This switch is not suitable for all Dahua 2-wire intercom products. Products from older generations are not supported by this switch
Maximum 2 entry panels per switch: A maximum of 2 VTO entry panels can be connected per switch. If there are more entry panels, they must be connected to the next switch. However, the switches can be interconnected
Maximum 2 extensions per VTH entry panel: A maximum of 2 additional extensions can be added to a VTH entry panel. Should these become more than this, it is recommended to connect the VTH to each other via a PoE switch.
VTNS2003-B
- For 6 devices or less a 48VDC power supply of 1.25A
- For 6 to 22 devices, a 48VDC power supply of 5A is recommended.

Adviezen

Recommended cabling:
- 4x0.5mm² with a maximum resistance of 4Ω per 100 metres. Maximum distance 50 metres
- 2x0.5mm² with a maximum resistance of 3.9Ω or less per 100metres. Maximum distance 50 metres
- UTP Cat5e 0.45mm with a maximum resistance of 12Ω per 100 metres. Maximum distance with 6 VTH is then 50 metres, with 12 VTH is 30 metres.
Lock control by external power supply: The power supply and control of locks and doors could theoretically also be done from the switch. However, this could negatively affect the operation and mutual communication of the indoor and outdoor units and is therefore not recommended.

Power supplies

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Power adapter 12volt DC 1A

DahuaVTNS2003B Two-wire switch

DahuaADS-65KSI-52-1, Power Supply 48Volt/1.25Amp for Dahua NVR/Intercom

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