FERMAX 8424299034447
Fermax 3444 Veo DUOX Plus 2-Wire Telephone User Manual
Model: 8424299034447
1. Introduction
This user manual provides comprehensive instructions for the installation, operation, and maintenance of the Fermax 3444 Veo DUOX Plus 2-wire telephone. Please read this manual carefully before using the device to ensure proper functionality and safety.
The Fermax 3444 Veo DUOX Plus is a modern and practical telephone designed for use with DUOX Plus systems, offering reliable communication within your building's intercom network.
2. Product Overview
The Fermax 3444 Veo DUOX Plus telephone is a white, wall-mounted unit designed for indoor use. It features a handset for audio communication and a button for door release.

Figure 2.1: Front view of the Fermax 3444 Veo DUOX Plus telephone, showing the handset and the main unit.

Figure 2.2: Side view of the Fermax 3444 Veo DUOX Plus telephone, highlighting its slim profile and wall-mounting points.

Figure 2.3: View of the internal components and wiring terminals of the Fermax 3444 Veo DUOX Plus telephone, with the cover removed.
3. Specifications
| Feature | Description |
|---|---|
| Brand | FERMAX |
| Model Number | 8424299034447 |
| Color | White |
| Compatible Systems | DUOX PLUS System |
| Wiring | 2-wire |
| Manufacturer | Fermax |
| Country of Origin | Spain |
4. Setup and Installation
Proper installation is crucial for the optimal performance of your Fermax 3444 Veo DUOX Plus telephone. It is recommended that installation be performed by a qualified technician.
4.1. Package Contents
Before beginning, verify that all components are present:
- Fermax 3444 Veo DUOX Plus Telephone Unit
- Mounting Screws and Wall Plugs
- Instruction Manual (this document)
4.2. Mounting the Unit
- Choose a suitable indoor location, preferably near the existing intercom wiring.
- Mark the drilling points on the wall using the telephone unit as a template.
- Drill holes and insert wall plugs.
- Secure the mounting plate (if separate) or the unit directly to the wall using the provided screws.
4.3. Wiring Connections
The Fermax 3444 Veo DUOX Plus operates on a 2-wire system. Ensure power is disconnected before making any wiring connections.
- Connect the two DUOX Plus system wires to the designated terminals on the telephone unit. Refer to the internal diagram for specific terminal identification.
- Ensure all connections are secure and properly insulated.
- Once wiring is complete, carefully reattach the cover of the telephone unit.

Figure 4.1: The Fermax 3444 Veo DUOX Plus telephone with its cover removed, illustrating the internal wiring area and connection points for the 2-wire system.
5. Operating Instructions
5.1. Receiving a Call
- When someone calls from the outdoor panel, the telephone will ring.
- Lift the handset to answer the call and establish communication.
5.2. Opening the Door
- During a conversation, press the door release button (typically marked with a key symbol) to open the main entrance door.

Figure 5.1: Front view of the Fermax 3444 Veo DUOX Plus telephone, highlighting the blue door release button located on the main unit.
6. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the exterior of the telephone. Do not use abrasive cleaners or solvents.
- Avoid Liquids: Keep the device away from water and other liquids to prevent damage.
- Temperature: Operate and store the telephone within recommended temperature ranges to ensure longevity.
- Cable Care: Ensure the coiled handset cable is not excessively stretched or tangled to prevent damage.

Figure 6.1: Close-up view of the coiled cable connecting the handset to the main unit, emphasizing the importance of proper cable management.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No ring tone when called | System not powered; wiring issue; volume too low. | Check power supply to the DUOX Plus system. Verify wiring connections. Ensure ringer volume is not muted or set too low. |
| No audio during conversation | Handset not properly seated; wiring issue; system fault. | Ensure handset is correctly placed on the cradle. Check 2-wire connections. Contact a qualified technician if the issue persists. |
| Door release button not working | Wiring issue to door opener; system fault; button malfunction. | Verify wiring to the door opener. Ensure the system is active. If the problem continues, professional assistance may be required. |
8. Warranty and Support
For warranty information and technical support, please refer to the official Fermax website or contact your local distributor. Keep your purchase receipt as proof of purchase.
Manufacturer: Fermax
Country of Origin: Spain
For further assistance, please visit www.fermax.com.
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