Large storage support · Dual device connection · Two‑way intercom · 4‑wire stable transmission · Compact design, easy installation – the cost‑effective security upgrade you’ve been looking for.

Today, we are unboxing one of our most powerful and versatile security systems – the 4‑wire intercom security system. From the moment we opened the box, it was clear that this is not an ordinary intercom. It is an all‑in‑one security hub that combines video intercom, analog camera expansion, detector linkage, and local video recording – all without the need for a separate NVR.

Let’s take a closer look at what makes this system so impressive and why it could be the perfect upgrade for your home, office, or shop.

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What’s Inside the Box?

The packaging is sturdy and well‑organised. Inside, you will find:

• 7″ indoor monitor – TFT LCD with touch buttons (800×480 or 1024×600 depending on version), sleek design
• Outdoor door station – 1000TVL or 1080P 2MP HD camera (model dependent), 115° wide‑angle lens, infrared night vision, IP65 weatherproof housing with rain cover
• 4‑wire connection cables – for stable, long‑distance transmission
• Power adapter (15V 1.2A) and mounting accessories
• User manual and quick start guide

The build quality is immediately apparent – the outdoor station feels solid, and the indoor monitor’s screen is bright and responsive.

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1. Large Storage Support – 128GB SD Card, No Extra NVR Needed

Traditional security systems often require a separate NVR (Network Video Recorder) or DVR to record video footage. That means extra cost, more wiring, and additional space. Our 4‑wire intercom system eliminates that need.

• Built‑in microSD card slot – supports up to 128GB
• Local video recording & playback – capture visitor photos and video clips directly to the card
• Gravação em loop – automatically overwrites old footage when the card is full
• Sem taxas mensais – all storage is local, no cloud subscription required

Whether you want to review who came to your door while you were away or keep a record of deliveries, this system has you covered – without the complexity of an NVR.

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2. Dual Device Connection – Link 2 Analog Cameras + 2 Detectors

This is where the system goes far beyond a standard video intercom. It supports:

• 2 analog cameras (AHD/CVBS) – connect additional cameras to monitor your garden, garage, back entrance, or hallway. Switch between camera views on the indoor monitor.
• 2 detectors – connect gas detectors, smoke detectors, or motion sensors for instant alarm alerts.

Why this matters:
Your door station covers the entrance, but what about the backyard, the garage, or the workshop? With two additional analog camera inputs, you can turn your indoor monitor into a mini surveillance centre. And with detector inputs, the system can alert you to gas leaks, smoke, or unauthorised movement – even before a visitor rings the bell.

Example applications:

• Início – Door station at front door + garden camera + garage camera + smoke detector.
• Office / shop – Door station at entrance + cashier camera + storage room camera + gas detector.

All alerts and camera feeds are managed from the same indoor monitor – no separate screens or controllers.

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3. Two‑Way Intercom – Clear Real‑Time Voice Communication

Whether you are at home or at the office, being able to speak with visitors is essential. This system delivers full‑duplex two‑way audio with echo cancellation and noise reduction.

• Natural conversation – speak and listen simultaneously, just like a phone call.
• Clear, loud audio – even in noisy environments, you will hear the visitor and they will hear you.
• Door unlock – after verifying the visitor, press the unlock icon to release the door lock.

Perfect for home entry, office reception, or shop security – you can talk to delivery drivers, guests, or service providers without opening the door.

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4. 4‑Wire Stable Transmission – Reliable Signal, Anti‑Interference, Long‑Distance

While wireless systems are convenient, they can suffer from interference, signal dropouts, and limited range. The 4‑wire analog technology used in this system is rock‑solid:

• Separate power and signal lines – two wires for power, two for audio/video/unlock signals. This eliminates crosstalk and interference.
• Long transmission distance – up to 100 metres with ≥0.5mm wire.
• Anti‑interference – not affected by Wi‑Fi congestion, microwave ovens, or neighbour’s networks.
• Simple wiring – any electrician can install it. No IP addresses, no network configuration.

For buildings where reliability is paramount – villas, apartments, offices, shops – 4‑wire analog is a proven, trustworthy choice.

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Compact Design, Easy Installation – All‑in‑One Security Control

Despite its powerful features, the system is surprisingly compact. The indoor monitor (approx. 19.6×14×2 cm) fits easily on any wall, and the outdoor station is sized to blend into most entrances.

Installation is straightforward:

1. Run 4‑wire cable from the outdoor station to the indoor monitor (or use existing cabling for retrofits).
2. Connect the outdoor camera(s) and detectors (optional).
3. Power up the indoor monitor – it supplies power to the outdoor station and cameras.
4. Test the system – call, talk, unlock, and view camera feeds.

No need for a separate DVR, no network switches, no cloud accounts – just reliable, all‑in‑one security.

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Who Is This System For?

User / Application	Why It Fits
Homeowners (villas, houses)	Monitor front door, garden, and garage from one screen; connect smoke/gas detectors for family safety.
Small apartment buildings	One system can serve up to 2 outdoor stations and 4 indoor monitors – perfect for 2‑4 unit buildings.
Office / shop owners	See who is at the entrance, monitor the cashier area, and keep an eye on storage – all from your desk.
Renovation projects	Can reuse existing 4‑wire cabling – no rewiring, no wall damage.
Budget‑conscious buyers	Get video intercom + surveillance + alarm detection in one system – far cheaper than buying separate devices.

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Tap the Video to See the Full Unboxing

We have recorded a complete unboxing and demonstration video showing every component, how to connect the additional cameras and detectors, and a live test of the two‑way intercom and recording functions.

👉 Click to watch the video (embed link)

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Ready to Upgrade Your Security?

✅ Considerações finais 4‑wire intercom security system offers an unbeatable combination of features: local storage, analog camera expansion, detector linkage, two‑way intercom, and rock‑solid 4‑wire transmission – all in one compact, easy‑to‑install package.

Whether you are securing your home, office, or shop, this system delivers the performance and reliability you need, at a cost that makes sense.

📩 Contact us for catalog, pricing, or to request a sample.
🌐 Website: www.farhd.com
📧 Email: [email protected]
💬 Reply “4WIRE” – we will send you the full datasheet and a quotation within 24 hours.

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