Product SKU: DHI-VTNS1001B-2-A
Product Overview
For installers building out a Dahua 2-wire intercom system, the VTNS1001B-2 is the DIN rail-mounted switch that ties the network together. This compact accessory bridges a single 2-wire bus to an RJ45 network connection, supporting up to 4 indoor monitors and 2 door stations from one device. Designed for guide rail installation inside a standard electrical enclosure, it keeps intercom infrastructure tidy and organised within a cabinet rather than exposed on a wall. Featuring a white PC and ABS casing with 2 status indicator lights, it provides a clear visual reference for system state at a glance. Supplied with a power converter cable and rated for operating temperatures from -10°C to +55°C, the VTNS1001B-2 suits residential and light commercial intercom deployments where a clean, DIN rail-based installation is the preferred approach. CE, FCC, and UL certified.
Key Capabilities
2-Wire to RJ45 Bridging
A single 2-wire port connects to the intercom bus while the RJ45 port links the system to the network, allowing a streamlined two-connection architecture without additional conversion hardware between the wiring and the switch.
Supports 4 Monitors and 2 Door Stations
One switch handles up to 4 indoor monitors and 2 door stations, making it the right component for multi-apartment entries, dual-door residential installations, or small commercial lobbies with multiple call points.
DIN Rail Mount for Cabinet Integration
Guide rail mounting means the VTNS1001B-2 installs directly inside a standard electrical enclosure alongside circuit breakers and other DIN rail components, keeping intercom infrastructure contained and professionally presented.
Status Indicator Lights
2 built-in status indicator lights give technicians an at-a-glance reference for device state during commissioning and ongoing maintenance, reducing diagnostic time when checking system connectivity from the cabinet.
Best For
- Multi-apartment or dual-entry installations: Support for 2 door stations allows coverage of a front and back entrance, or 2 separate building entries, from a single switch unit.
- Cabinet-based intercom infrastructure: DIN rail mounting means the switch fits neatly into a metering board or enclosure alongside other low-voltage equipment rather than requiring a separate wall-mounted housing.
- Dahua 2-wire intercom system expansion: Installers adding monitors or door stations to an existing Dahua 2-wire deployment can use this switch as the central distribution point for up to 4 indoor monitors.
Why Choose the VTNS1001B-2
The VTNS1001B-2 is a purpose-built component for Dahua 2-wire intercom systems, not a generic network switch repurposed for intercom use. Its single 2-wire input paired with an RJ45 output handles the specific protocol and power requirements of the Dahua 2-wire ecosystem, supporting up to 4 monitors and 2 door stations from a single device. The DIN rail form factor is a practical advantage on commercial and residential projects where all low-voltage infrastructure is consolidated inside an enclosure. The included power converter cable reduces the need for additional hardware at installation. Rated from -10°C to +55°C and certified to CE, FCC, and UL standards, it meets the requirements for both residential and light commercial deployments. The VTNS1001B-2 is available at Security Wholesalers as part of the broader Dahua intercom accessories range.
Buyer Decision Tips
Buyer Tip 1 – Confirm monitor and door station count before ordering: The VTNS1001B-2 supports a maximum of 4 indoor monitors and 2 door stations. If your installation requires more monitors or additional door stations beyond these limits, you will need to plan for additional switch units or a different distribution approach within your Dahua 2-wire system design.
Buyer Tip 2 – Verify enclosure space for DIN rail mount: The unit measures 131 mm x 103 mm x 40 mm and mounts on a standard DIN/guide rail. Before installation, confirm your electrical enclosure has sufficient rail space and depth to accommodate the device alongside existing components, and that the DC 48V power supply with 1A-3A output is available or budgeted for.
Key Features & Technical Specifications
| Product Type |
2-Wire Intercom Switch |
| Communication Mode |
2-wire |
| Ports |
1 x 2-wire port, 1 x RJ45 |
| Max Indoor Monitors Supported |
4 |
| Max Door Stations Supported |
2 |
| Status Indicator Lights |
2 |
| Power Input |
DC 48V, 1A-3A |
| Power Consumption |
15W (kit) |
| Casing Material |
PC + ABS |
| Colour |
White |
| Installation Method |
Guide rail (DIN rail) mount |
| Included Accessory |
Power converter cable |
| Dimensions (W x H x D) |
131 mm x 103 mm x 40 mm (5.16″ x 4.06″ x 1.57″) |
| Net Weight |
0.25 kg (0.55 lb) |
| Gross Weight |
0.39 kg (0.86 lb) |
| Operating Temperature |
-10°C to +55°C |
| Humidity |
10%-95% RH (non-condensing) |
| Altitude |
0-3,000 m |
| Certifications |
CE, FCC, UL |
Ideal Use Cases
Residential Multi-Dwelling Entry
Apartment buildings or townhouse complexes with up to 4 individual units can use one VTNS1001B-2 to distribute calls from a door station to each resident’s indoor monitor over the 2-wire bus.
Dual-Door Commercial or Retail Premises
Support for 2 door stations makes this switch suited to premises with a main entrance and a staff or delivery entrance, both managed from the same switch and connected indoor monitors.
Cabinet-Integrated Low-Voltage Systems
The DIN rail mount allows the VTNS1001B-2 to sit inside a standard electrical enclosure alongside circuit protection and other DIN components, keeping the intercom switch as part of an organised, professionally installed low-voltage board.
Dahua 2-Wire System Infrastructure
As a dedicated Dahua 2-wire accessory with a matching RJ45 output, the VTNS1001B-2 integrates cleanly into new or expanding Dahua intercom deployments without requiring protocol converters or third-party adapters.
Choosing the Right Model
- Choose this model if: You are installing or expanding a Dahua 2-wire intercom system that requires up to 4 indoor monitors and 2 door stations, and you need a DIN rail-mountable switch that fits inside a standard electrical enclosure.
- Choose a different model if: Your installation requires more than 4 indoor monitors or more than 2 door stations from a single switch, or if your intercom infrastructure uses a different wiring standard that does not match the 2-wire protocol this device supports.
FAQs
- What is the VTNS1001B-2 and what does it do in a 2-wire intercom system?
The VTNS1001B-2 is a 2-wire intercom switch that acts as a distribution hub within a Dahua 2-wire intercom installation. It connects the 2-wire intercom bus via its dedicated 2-wire port and bridges to the network via an RJ45 port, allowing up to 4 indoor monitors and 2 door stations to communicate through a single device.
- How many monitors and door stations can one VTNS1001B-2 support?
One VTNS1001B-2 supports a maximum of 4 indoor monitors and 2 door stations. If your installation exceeds these numbers, you will need to plan for additional switch units or an alternative distribution configuration within your system design.
- What power supply does the VTNS1001B-2 require?
The device requires a DC 48V power supply with an output between 1A and 3A. Maximum power consumption for the kit is 15W. A power converter cable is included in the box, but you should verify your installation has an appropriate DC 48V source available before commissioning.
- Does the VTNS1001B-2 mount on a standard DIN rail?
Yes. It uses a guide rail (DIN rail) mount, allowing it to be installed directly inside a standard electrical enclosure alongside circuit breakers and other DIN-mounted components. The unit measures 131 mm x 103 mm x 40 mm, so confirm your enclosure has sufficient rail space and depth before ordering.
- What operating environment is the VTNS1001B-2 rated for?
The switch is rated for operating temperatures from -10°C to +55°C and humidity between 10% and 95% RH (non-condensing), with an altitude rating of 0-3,000 m. As a DIN rail-mounted device, it is intended for installation inside a cabinet or enclosure rather than direct outdoor exposure.
- What certifications does the VTNS1001B-2 hold and where is it available?
The VTNS1001B-2 holds CE, FCC, and UL certifications. The DHI-VTNS1001B-2-A is the Australian regional variant and is available through Security Wholesalers as part of the Dahua intercom accessories range.
Cabling Considerations
- 2-Wire Bus Connection: Use the dedicated 2-wire port on the VTNS1001B-2 to connect to the intercom 2-wire bus. Follow Dahua’s published cable length and gauge recommendations for the specific monitors and door stations being used in your system.
- RJ45 Network Connection: The RJ45 port connects the switch to your network infrastructure. Use Cat5e or Cat6 cable for the network run, with a maximum recommended Ethernet run of 100 m for standard structured cabling.
- Power Cabling: The device requires a DC 48V, 1A-3A supply. Route power cabling to the enclosure from an appropriate DC power source. The included power converter cable assists with the final connection at the device.
- Wiring Tips: Install the VTNS1001B-2 inside a sealed or semi-sealed enclosure to keep the device within its rated humidity range and to protect the 2-wire and RJ45 terminations from physical interference. Label all 2-wire runs at the switch to simplify future maintenance or expansion.
Additional Information
Dahua DHI-VTNS1001B-2-A Datasheet
