Only two cables for power & signal, easy retrofitting for old buildings · Wide range of indoor monitors and outdoor door stations · Support electric lock release, stable two‑way audio · OEM & ODM customization available

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The Challenge: Upgrading Old Buildings Without Breaking Walls

For property managers and building owners, upgrading an outdated intercom system often feels like a nightmare. Running new cables through concrete walls, tearing open finished corridors, and disrupting residents for weeks—it’s expensive, messy, and often simply impractical.

In China alone, nearly a thousand old residential communities face intercom system upgrades every year. The traditional approach of replacing analog voice intercoms with digital video systems requires extensive rewiring, drilling through walls, and creates noise and dust that disturbs residents. The result? High costs, long construction timelines, and frustrated tenants.

But what if there was a way to upgrade to a modern video intercom system without running a single new cable?

There is. It’s called 2-wire video intercom technology—and FARHD has mastered it.

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The Solution: Two Wires. One Complete Upgrade.

FARHD’s 2-Wire Video Intercom Solution delivers all the benefits of a modern video intercom system using just the existing two-core cables already in your building.

Here’s how it works: power, audio, video, and control signals all transmit over a single pair of wires—non‑polarity, so you can’t connect them backwards. The system uses a centralised power supply, and can support up to 2 outdoor units and 6 indoor monitors in a single configuration.

What this means for you:

• Zero rewiring – Reuse the existing two-core cables already installed in your walls
• No wall damage – No drilling, no channelling, no patching
• Minimal disruption – Install in hours, not weeks—residents barely notice
• Dramatic cost savings – Less labour, less material, lower total project cost
• Installation rapide – Upgrading an old intercom system becomes simple, regardless of the project scale

For old residential complexes, this represents a genuine leap forward—bringing modern HD video intercom to buildings that were previously too difficult or expensive to upgrade.

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A Wide Range of Products for Every Need

FARHD offers a complete ecosystem of 2-wire intercom products, ensuring you can build a system perfectly tailored to your project:

Indoor Monitors (Various Sizes)

• High-definition displays with clear, crisp visuals
• Touchscreen or button operation
• Available in multiple screen sizes to suit different preferences
• Full-duplex two-way audio for natural conversations

Stations de porte extérieures

• Weatherproof designs for reliable outdoor operation
• HD cameras with infrared night vision
• Built-in card readers for keyless entry
• Durable construction for long-term use

System Accessories

• Centralised power supplies
• Wiring accessories and mounting hardware
• Integration modules for electric locks and access control systems

The 2-wire system also supports advanced features including photo capture, video recording, motion detection, and remote access via mobile apps.

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Key Features That Make This System Stand Out

🔌 Electric Lock Release

The system supports electric lock integration, allowing residents to remotely release the door lock from their indoor monitor. Compatible with various lock types for flexible installation.

🎙️ Stable Two-Way Audio

Crystal-clear, full-duplex audio communication between visitors and residents—no echo, no delays, no frustration. Conversations feel natural and immediate.

📹 HD Video & Night Vision

High-definition video capture with infrared night vision ensures clear visibility day and night. You’ll always know who’s at the door—even in complete darkness.

🏠 Expandable System

Support for multiple indoor monitors and outdoor stations means the system grows with your needs. Whether you have a small villa or a large apartment complex, 2-wire technology scales seamlessly.

📱 Remote Access (Optional)

With compatible models, residents can answer calls, view live video, and unlock doors from their smartphones—adding an extra layer of convenience and security.

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Perfect for: Old Buildings, Villas, and Apartments

FARHD’s 2-Wire Video Intercom Solution is ideal for:

Application	Pourquoi cela fonctionne
Old apartment retrofits	Reuse existing two-core wiring—no rewiring, no wall damage
Villas and townhouses	Simple installation, expandable to multiple indoor monitors
Immeubles de bureaux	Quick upgrade without disrupting business operations
Historic properties	Preserve building integrity—no drilling into heritage walls

The technology is particularly valuable for projects where installing new Ethernet cabling is too difficult or expensive. By leveraging existing legacy cables, the system keeps project costs down and makes retrofits more economically attractive.

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OEM & ODM Customization Available

As a professional OEM/ODM manufacturer with over 25 years of industry experience, FARHD offers comprehensive customization services for the 2-wire video intercom system.

What we can customise:

• Logo & branding – Your logo on the products and packaging
• Conception matérielle – Custom LCD screens, driver boards, and camera modules
• Interface logicielle – Tailored UI and language options
• Product specifications – Customised features to match your market needs

From initial concept to mass production, FARHD provides end-to-end support—ensuring you receive products that align precisely with your specifications.

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Pourquoi choisir FARHD ?

• Founded in 1998 – Over 28 years of video intercom expertise
• Présence mondiale – Serving over 100 enterprises worldwide
• Intégration verticale – Full control over R&D, manufacturing, and quality
• One-stop solutions – Complete product range covering 4-wire CVBS, 4-wire AHD, 2-wire, IP, SIP, and wireless systems
• Rigorous quality control – In-house aging testing ensures long-term reliability
• OEM/ODM ready – Custom solutions for brands and system integrators

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Ready to Upgrade Without the Headache?

Old buildings don’t need to stay stuck in the past. With FARHD’s 2-Wire Video Intercom Solution, you can bring modern HD video intercom to any building—without running a single new cable.

📩 Contact us for catalog, pricing, or to discuss your project.
🌐 Website: www.farhd.com
📧 Email: [email protected]

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FARHD – Video Intercom Manufacturer Since 1998.

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