Non‑polar two‑wire transmission · Reuse existing cables · 7‑inch IPS HD indoor monitor · Metal rainproof outdoor panel · Supports multiple indoor monitors, snapshot & motion detection recording

Widely used in private villas, townhouses, and old building renovation projects. Factory direct supply, flexible OEM available – welcome to inquire!

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Introduction: Why Is 2‑Wire Video Intercom Becoming the First Choice for Villas and Renovation Projects?

In the video intercom industry, wiring cost and installation difficulty are often the key bottlenecks for project success. New villas may have pre‑laid conduits, but renovation projects in old communities, self‑built houses, and townhouses often face challenges such as “impossible to rewire”, “damage to interior decoration”, and “too long construction period”.

FARHDs 2‑Wire Video Intercom System was designed to solve exactly these problems. Using non‑polar two‑wire transmission technology, it transmits power, video, audio, and unlock signals over a single pair of ordinary two‑core wires. No polarity concerns, no separate power cabling – and most importantly, it can directly reuse existing old cables. This provides villa owners and renovation contractors with a truly cable‑saving, labor‑saving, and worry‑free professional solution.

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1. Non‑Polar Two‑Wire Transmission – Dramatically Reduces Wiring Cost and Labor

Traditional analog video intercoms often require 4 or more dedicated wires, with strict specifications for wire gauge and polarity. IP systems, while feature‑rich, require CAT5/6 network cabling and network configuration, which is not friendly for old building retrofits.

FARHD’s 2‑wire system requires only one pair of ≥0.5mm² two‑core wires to simultaneously transmit:

• Video signal (1080P HD)
• Audio signal (full‑duplex two‑way)
• Control signals (call, unlock)
• Device power (the indoor monitor powers the outdoor station over the same pair)

And thanks to non‑polar connection, you can connect the wires either way – no risk of reverse polarity. This dramatically lowers the installation threshold – any electrician can handle it. Installation time is reduced by more than 50%, and material cost is only a fraction of traditional solutions.

For contractors, this means lower bids and higher margins. For homeowners, it means less wall damage and faster occupancy.

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2. Retrofit Friendly – Reuse Existing Old Cables, No New Conduits Required

Old communities, already‑decorated villas, heritage buildings – in these scenarios, pulling new cables is often impossible. One of the greatest strengths of the FARHD 2‑wire system is its ability to directly use existing two‑core wires already in the building:

• Leftover old intercom lines (most are 2‑core or 4‑core – if two cores are intact, they work)
• Telephone lines (two cores)
• Even some good‑quality two‑core power cables

As long as the cable is continuous and the resistance is not too high, the FARHD 2‑wire system will work reliably, with a transmission distance of up to 100 metres – enough for most villa gardens and building corridors.

Real retrofit example: An old 6‑storey, 24‑unit apartment building had a broken audio intercom system, but the two‑core wires inside the conduits were still intact. The contractor used FARHD’s 2‑wire video intercom and completed the entire replacement in just 2 days – no wall damage, and resident satisfaction soared.

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3. 7‑inch IPS HD Indoor Monitor + Metal Rainproof Outdoor Panel

Good looks, ease of use, and durability – FARHD pursues all three in every product.

🖥️ 7‑inch IPS HD Indoor Monitor

• 1024×600 resolution, IPS technology – vivid colours, wide viewing angles. See visitors clearly from anywhere in the room.
• Touch buttons or full touchscreen (depending on model) – intuitive operation, easy for children and the elderly.
• 10 adjustable ringtones – distinguish between main door, side gate, or different callers.
• Dual relay outputs – independently control main door and garden/garage door.
• Bewegungserkennung und Aufzeichnung – supports human motion detection; capture snapshots or short videos to a memory card.
• MicroSD card storage – up to 128GB, store visitor data locally – no cloud fees.

☔ Metal Rainproof Outdoor Panel

• Aluminum alloy or high‑grade ABS – corrosion‑resistant, UV‑resistant, impact‑resistant.
• IP65 dustproof and waterproof – metal rain cover included; stands up to heavy rain, dust, and snow.
• Wide operating temperature – -40°C to +70°C, from freezing winters to scorching summers.
• 1080P HD camera – 115° wide angle, infrared night vision, WDR for clear images even in strong backlight.
• Optional RFID card, NFC, face recognition – to meet different security levels.

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4. Support Multiple Indoor Monitors, Snapshot & Motion Detection Recording

In villas or apartment projects, multiple indoor monitors are often needed (living room, bedroom, study, staff room). The FARHD 2‑wire system supports up to 2 outdoor stations + 4 indoor monitors in series or expanded via 2‑wire switches.

• Room‑to‑room call – indoor monitors in different rooms can call each other, convenient for family communication.
• Bewegungserkennungsalarme – when someone lingers or moves suspiciously near the door, the indoor monitor sounds an alert and can push a notification via the app.
• Snapshot & video recording – automatically capture visitor snapshots or short videos to a microSD card. Even if you miss a call, you can review it later.

For property management or security centres, an optional management station can centralise control of multiple units.

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5. Wide Applications: Villas, Townhouses, Old Building Renovations

Application Scenario	Why Choose FARHD 2‑Wire System
Private villa	Reuse existing wiring – no need to damage garden or interior decoration; support 2 door stations (front gate + back garden) and multiple indoor monitors (living room + master bedroom).
Townhouse / duplex	Each unit has its own indoor monitor; common door station managed centrally. 2‑wire system can be daisy‑chained, saving common area cabling.
Old community retrofit	Use existing two‑core wires – short construction period, low cost, zero disruption to residents; increases property value.
Self‑built / rural house	No networking expertise needed; any electrician can install; long‑distance transmission suitable for large courtyards.

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6. Factory Direct Supply, Flexible OEM

FARHD has over 25 years of R&D and manufacturing experience in video intercoms. We are not just a brand – we are a direct factory:

• No middleman markup – competitive pricing, reasonable margins.
• OEM / ODM support – custom logo, housing colour, software language, packaging – build your own brand.
• No MOQ for trial orders – start with one sample unit; low risk to test.
• Fast delivery – standard products in stock; custom orders shipped on time per contract.
• Global technical support – English/Chinese manuals, installation videos, remote assistance.

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7. Get Product Information & Quotation Today

The FARHD 2‑Wire Video Intercom System is selling worldwide. If you are planning a villa project, an old community renovation, or simply need a cost‑effective and reliable intercom solution, contact us.

📩 Email: [email protected]
🌐 Website: www.farhd.com
💬 Reply “2WIRE” – we will send you detailed specifications and a quotation.

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#SecuritySystem #ApartmentIntercom #HomeProtection