2-Wire Connection and Configuration of 6-Button Outdoor Station and 7″ Indoor Monitors

A complete step-by-step guide for installers, system integrators, and property managers

When equipping a small apartment building or multi-unit residential property, a 6-button outdoor station paired with 7-inch indoor monitors offers an ideal balance of simplicity, functionality, and cost. The 2-wire connection makes installation fast and retrofit-friendly, while the 7-inch touchscreen monitors give residents a clear, modern interface for answering calls, viewing visitors, and unlocking the door.

This guide covers the entire process: wiring the 6-button outdoor station to multiple 7-inch indoor monitors, configuring room numbers and button mapping, and testing the system for reliable daily operation.

System Components

A typical 2-wire 6-button apartment kit includes:

The 6-button station is designed for buildings with up to six units. Each button corresponds to one apartment. The 7-inch indoor monitors provide a large, clear display for visitor verification.

Wiring Topology: 2-Wire Connection

The 2-wire system transmits power, audio, video, and control signals over a single pair of standard two-core wires. The connection is non-polarity, meaning you can connect the wires either way without risk of damage.

There are two common wiring configurations for a 6-button system:

1. Star Wiring (Recommended)

Each indoor monitor is wired independently from a central 2-wire switch or distribution point.

[Outdoor Station] ── 2-wire ── [2-Wire Switch] ── 2-wire ── [Indoor Monitor 1]
                                                   ├── 2-wire ── [Indoor Monitor 2]
                                                   ├── 2-wire ── [Indoor Monitor 3]
                                                   ├── 2-wire ── [Indoor Monitor 4]
                                                   ├── 2-wire ── [Indoor Monitor 5]
                                                   └── 2-wire ── [Indoor Monitor 6]

Advantages:

• Fault isolation – a problem in one apartment does not affect others.
• Easier room number configuration.
• Scalable if more units are added later.

Wiring steps:

1. Mount the outdoor station at the entrance.
2. Run a 2-core cable from the outdoor station to the 2-wire switch.
3. Run a separate 2-core cable from the switch to each indoor monitor.
4. Connect all wires – no polarity concerns.
5. Power the switch with the supplied adapter.

2. Bus Wiring (Daisy-Chain)

Indoor monitors are connected in series along a shared 2-wire bus.

[Outdoor Station] ── 2-wire ── [Indoor Monitor 1] ── 2-wire ── [Indoor Monitor 2] ── ... ── [Indoor Monitor 6]

Advantages:

• Less cable required.
• Faster installation in some layouts.

Considerations:

• A fault on the bus can affect multiple apartments.
• Room number configuration must be done carefully.

Wiring steps:

1. Run the 2-core bus from the outdoor station through each floor.
2. Tap into the bus for each indoor monitor.
3. Assign a unique room number to each monitor.
4. Terminate the bus at the last monitor.

Recommendation: For a 6-button system, star wiring with a 2-wire switch is generally more reliable and easier to maintain.

Step-by-Step Connection Guide

Step 1: Mount the Outdoor Station

• Mount at 1.5–1.8 metres above ground, protected from direct rain and sunlight.
• Use the included rain cover and mounting bracket.

Step 2: Mount the Indoor Monitors

• Mount each 7-inch monitor in a convenient indoor location (hallway, living room, or bedroom).
• Recommended height: 1.2–1.4 metres for easy access by all residents.

Step 3: Run the 2-Wire Cables

• Use 2-core cable (≥0.5mm²) for all runs.
• Keep cable runs under 100 metres. For longer distances, use a thicker gauge (0.75mm² or 1.0mm²).
• Avoid running cables parallel to AC power lines to prevent interference.

Step 4: Connect the Outdoor Station

• Connect the 2-wire cable to the outdoor station’s terminals. Polarity does not matter.
• If an electric lock is used, connect the lock wires to the relay output (NO and COM).
• A separate power supply (typically 12V DC) is required for the lock.

Step 5: Connect the 2-Wire Switch

• Connect the cable from the outdoor station to the switch’s input.
• Connect each indoor monitor’s cable to the switch’s output ports.
• Power the switch with the supplied adapter.

Step 6: Connect the Indoor Monitors

• Connect each monitor’s 2-wire cable to the switch output or bus.
• Ensure each monitor is powered (via the 2-wire connection).

Step 7: Power On and Test

• Power on the system.
• Press each button on the outdoor station. The corresponding indoor monitor should ring.
• Test two-way audio, video, and unlock function.

Configuration: Room Numbers and Button Mapping

After wiring, each indoor monitor must be assigned a unique room number, and each button on the outdoor station must be mapped to the correct apartment.

Step 1: Configure Room Numbers on Indoor Monitors

Via Indoor Monitor Menu:

1. On the 7-inch monitor, enter the Settings menu.
2. Select Room Number or Address Setting.
3. Enter the apartment number (1–4 digits).
4. Save and exit.
5. Repeat for each monitor.

Via 2-Wire Switch or Management Software (for larger systems):

1. Connect the switch to a PC or use its web interface.
2. Import a list of apartments and monitor IDs.
3. Assign room numbers in bulk.
4. Download the configuration to the monitors.

Important: Each monitor must have a unique room number. Duplicate numbers will cause call routing errors.

Step 2: Map Outdoor Station Buttons to Apartments

For a 6-button station:

• By default, buttons 1–6 correspond to apartments 1–6.
• If your apartment numbering is different (e.g., 101, 102, 201, 202), you must configure the button mapping.

Configuration methods:

• Via indoor monitor menu: Some systems allow button mapping from the monitor’s settings.
• Via management software: Assign each button to a specific room number.
• Via DIP switches or jumpers: Some models use physical switches on the outdoor station to set button addresses.

Example mapping:

Label each button with the resident’s name or apartment number for easy identification.

Step 3: Configure System Settings

• Unlock duration: Set the relay release time (typically 3–10 seconds).
• Ringtone volume: Adjust indoor monitor ringtone volume.
• Video settings: Adjust brightness, contrast, and night vision if available.
• Language: Select the preferred language for the UI.

Step 4: Optional App Configuration (Tuya / Smart Life)

If the 7-inch indoor monitor supports Wi-Fi and Tuya Smart Life:

1. Connect the monitor to a 2.4GHz Wi-Fi network.
2. Download the Tuya Smart or Smart Life app.
3. Create an account and tap “Add Device.”
4. Follow the pairing instructions.
5. Assign the device to a room and name it (e.g., “Apartment 101”).
6. Test remote answering, live view, and unlock.

Note: Not all 2-wire systems support app integration. Check your specific model’s specifications.

Testing and Commissioning

After configuration, test every function:

If any test fails, check wiring connections, cable continuity, and power supply voltage before replacing hardware.

Troubleshooting Common Issues

Best Practices for 6-Button Systems

• Use quality cable – ≥0.5mm² copper for 2-wire runs.
• Keep cable runs under 100 metres – for longer distances, use thicker gauge or a repeater.
• Avoid parallel runs with power lines – prevents interference.
• Label both ends of every cable – simplifies maintenance.
• Test each apartment after configuration – call from the outdoor station and verify all functions.
• Secure outdoor connections – use waterproof gel caps or silicone.
• Document room numbers and wiring – essential for future service.
• Update firmware – check for updates after installation.

Why Choose FARHD for Your 2-Wire Apartment System?

FARHD has been designing and manufacturing video intercom systems since 1998, with over 28 years of industry experience. Our 2-wire apartment systems are trusted in over 100 countries for their reliability, ease of installation, and robust feature set.

Key advantages:

• Source factory – Factory-direct pricing, full quality control
• 2-wire simplicity – Reuses existing wiring, non-polarity, up to 100m
• 6-button outdoor station – Ideal for small apartment buildings
• 7-inch indoor monitors – Clear IPS display, responsive touch
• Room number configuration – Flexible, supports 1–4 digit numbers
• Weatherproof – IP65 outdoor stations, -40°C to +70°C
• OEM/ODM/SKD – Custom branding, packaging, and software
• No MOQ – Start with a sample; scale as you grow

Our products are installed in thousands of apartments, villas, and residential projects worldwide.

Ready to Install Your 6-Button System?

The FARHD 2-wire 6-button outdoor station with 7-inch indoor monitors combines easy wiring, simple configuration, and reliable performance—making it the ideal choice for small apartment buildings and multi-unit residential projects.

Contact us for catalog, pricing, or to request a sample.

Email: info@farhd.com
Website: www.farhd.com
WhatsApp: +86 188 2370 9809 / +86 199 2545 1918

FARHD – Video Intercom Manufacturer Since 1998.

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