---
product_id: 51571599
title: "FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount"
brand: "fermax"
price: "KD 20.86"
currency: KWD
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.kw/products/51571599-fermax-3431-loft-4-n-universal-door-telephone-5-wire
store_origin: KW
region: Kuwait
---

# 5-wire universal wiring Sleek black ABS build Easy DIY installation FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount

**Brand:** fermax
**Price:** KD 20.86
**Availability:** ✅ In Stock

## Summary

> 🔔 Upgrade your entryway game with the FERMAX 3431 Loft 4+N—where smart meets sleek!

## Quick Answers

- **What is this?** FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount by fermax
- **How much does it cost?** KD 20.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/51571599-fermax-3431-loft-4-n-universal-door-telephone-5-wire)

## Best For

- fermax enthusiasts

## Why This Product

- Trusted fermax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Corded Reliability:** No batteries needed—enjoy uninterrupted, dependable communication every time.
- • **Effortless DIY Setup:** Clear wiring manual and intuitive design make installation a breeze for any savvy professional.
- • **Compact & Lightweight:** At just 300g and slim dimensions, it fits discreetly without compromising style or function.
- • **Premium Durable Build:** Crafted from robust ABS material for a sleek, long-lasting finish that complements modern interiors.
- • **Universal 5-Wire Compatibility:** Seamlessly fits most existing door telephone systems—ditch the specialist hassle!

## Overview

The FERMAX 3431 Loft 4+N is a universal door telephone featuring a 5-wire wiring system designed for easy gypsum mounting. Made from durable ABS plastic in a stylish black finish, it offers reliable corded communication without the need for batteries. Its compact size and comprehensive wiring manual empower professionals to effortlessly replace or upgrade existing intercom systems, saving time and specialist costs.

## Description

Free delivery and returns on all eligible orders. Shop FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount.

Review: Perfect replacement and looks Great!! - I had some doubts about how this would work after reading some reviews! However the fact is it works very well and once you know the wiring schematic it is very easy to connect! I was told a load of nonsense by my M.A. saying I needed a 'like for like' replacement and "Don't buy a cheap one from desertcart". The so called 'specialist' they put me in touch with was very vague about attending and replacing it! Here's my tips for successfully installing one! Firstly don't remove or disconnect any wires from the old one!! Take pictures of the wiring showing clearly which wires are connected to which terminals! If the colour codes are not obvious mark each one with a number corresponding to the terminal it is fixed to! Identify EXCATLY the make and model of the old one and look up on the comprehensive instruction manual to find it in the list! If it's not on there it might not work! The pdf manual can be downloaded in advance from the item description! Once you have matched the old to the new just follow the number code for your old handset to the new one! That's it! Make sure you also check the correct setting of the SW2 (Z or E) switch! All in all this has probably saved me over a hundred pounds on using a 'specialist' company!!
Review: Great product - Initially I was concerned about the ease of instalment due to some of the reviews. It turned out to be quite straightforward so I thought I would outline it in a review. Here is how I set it up: 1. First I took the cover off our old intercom unit, which was a Comelit. See image 1. 2. Fermax Loft 3399 comes with a wiring manual. See image 2. From the labels of the wires in the previous step, I figured out which wire goes where and which switch to set. 3. Once the wiring was done, I put the cover on and tested. That was all. See image 3. Now, if my previous intercom brand wasn't in the wiring manual, I couldn't have installed it with such ease; so, I'd say check that before you buy. The unit looks good and feels solid.

## Features

- Landline phone
- Easy to use
- Premium quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A3APXP4 |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Black |
| Customer Reviews | 3.9 3.9 out of 5 stars (5,027) |
| Date First Available | 4 April 2014 |
| Item Package Quantity | 1 |
| Item Weight | 300 g |
| Item model number | 3431 |
| Manufacturer | Fermax |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Number of Pieces | 1 |
| Part Number | 3431 |
| Power Source | Corded Electric |
| Product Dimensions | 8.8 x 5.8 x 25.8 cm; 300 g |

## Product Details

- **Answering system type:** Digital
- **Brand:** FERMAX
- **Colour:** Black
- **Compatible devices:** PSTN (Public Switched Telephone Network)
- **Dialler type:** Single Keypad
- **Item dimensions L x W x H:** 8.8 x 5.8 x 25.8 centimetres
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Multiline operation:** Multi-Line Operation
- **Power source:** Corded Electric
- **Telephone type:** Corded

## Images

![FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount - Image 1](https://m.media-amazon.com/images/I/31BrfhKatUL.jpg)
![FERMAX 3431 Loft 4+N - Universal door telephone, 5-wire wiring system, gypsum mount - Image 2](https://m.media-amazon.com/images/I/419OaVTpgcL.jpg)

## Questions & Answers

**Q: The volume is so low it's not audible, can this be fixed?**
A: you CAN later the volume, turn variable resistor P2 inside just below the wires

**Q: how long is the wiring?**
A: There is no cable included internally. If you mean how much cable do you need to reach the connections then not very much as there are plenty of holes in the back, but the more cable you have coming out of the wall the more flexible your mounting options will be.

**Q: What sound does this make please?**
A: A quite harsh flat-sounding buzzer. There is no volume control. It's not a pleasant noise, but you won't be able to ignore it.

**Q: I have 8 wires coming out of wall (red, green, white, brown, blue). how do i connect it?**
A: No real answer here. You need to establish what colours were used by the original installer. Can you get acess to the main external buttons? Did you take note of the connections of the previous handset? Its selv so dont be afraid to try different connections to get it working. The best way is to use a multi meter to find your +12v and 0v then find the lock activation by shorting it on +12v (the lock will buzz) then if memory serves me correct just switch the speech and ring until it works. No damage can be done to the unit. Im a spark and this is how ive sorted it before

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect replacement and looks Great!!
*by C***J on 18 August 2018*

I had some doubts about how this would work after reading some reviews! However the fact is it works very well and once you know the wiring schematic it is very easy to connect! I was told a load of nonsense by my M.A. saying I needed a 'like for like' replacement and "Don't buy a cheap one from Amazon". The so called 'specialist' they put me in touch with was very vague about attending and replacing it! Here's my tips for successfully installing one! Firstly don't remove or disconnect any wires from the old one!! Take pictures of the wiring showing clearly which wires are connected to which terminals! If the colour codes are not obvious mark each one with a number corresponding to the terminal it is fixed to! Identify EXCATLY the make and model of the old one and look up on the comprehensive instruction manual to find it in the list! If it's not on there it might not work! The pdf manual can be downloaded in advance from the item description! Once you have matched the old to the new just follow the number code for your old handset to the new one! That's it! Make sure you also check the correct setting of the SW2 (Z or E) switch! All in all this has probably saved me over a hundred pounds on using a 'specialist' company!!

### ⭐⭐⭐⭐⭐ Great product
*by E***R on 1 October 2020*

Initially I was concerned about the ease of instalment due to some of the reviews. It turned out to be quite straightforward so I thought I would outline it in a review. Here is how I set it up: 1. First I took the cover off our old intercom unit, which was a Comelit. See image 1. 2. Fermax Loft 3399 comes with a wiring manual. See image 2. From the labels of the wires in the previous step, I figured out which wire goes where and which switch to set. 3. Once the wiring was done, I put the cover on and tested. That was all. See image 3. Now, if my previous intercom brand wasn't in the wiring manual, I couldn't have installed it with such ease; so, I'd say check that before you buy. The unit looks good and feels solid.

### ⭐⭐⭐⭐ Easy installation - good value
*by M***T on 27 November 2018*

Installation was easy enough, there is a comprehensive guide to replacing other manufacturers phones with wiring guides, just be sure to note the colours and where they go BEFORE you disconnect the wiring from the old phone. There are volume controls on the board inside the phone which you may need to adjust after installing. The only complaint I have is that the volume of the ringer is very high and not easily adjusted.

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**Shop now:** [https://www.desertcart.com.kw/products/51571599-fermax-3431-loft-4-n-universal-door-telephone-5-wire](https://www.desertcart.com.kw/products/51571599-fermax-3431-loft-4-n-universal-door-telephone-5-wire)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-03*