The VTNS2003B-2 module is dedicated to work in multi-family systems.

The device has one 2-wire bus output that allows for connection of up to 20 VTH series indoor panels and 2 VTO series video doorphones. In addition, additional ports allow cascading devices both via a 2-wire bus and UTP cat 5e/6 cables terminated with RJ-45 connectors.

The switch can be also connected to the LAN network, which allows to expand the installation with additional DAHUA devices working in the IP standard and connect the entire video door station to the Internet. In case of cascade connection the VTNS2003B-2 devices with LAN network, it is recommended to attach only the lowest level switch in the cascade to it.

Attention! When selecting 2-wire devices, check the compatibility list available at the bottom of the page in the "files" section.