1. Introduction and Overview
This manual provides comprehensive instructions for the installation, operation, and maintenance of the FERMAX Duox Plus Veo-XL 7" Monitor. The Veo-XL monitor is a key component of the Duox Plus digital two-wire video intercom system, designed to provide secure and convenient communication with visitors at your entrance.
The monitor features a 7-inch color display, offering clear video and audio communication, along with intuitive controls for answering calls, opening doors, and other system functions. Please read this manual thoroughly before installation and use to ensure proper functionality and safety.

Figure 1: FERMAX Duox Plus Veo-XL 7" Monitor. This image shows the front view of the monitor, highlighting its 7-inch screen and the control buttons located below the display.
2. Setup and Installation
Proper installation is crucial for the optimal performance of your FERMAX Duox Plus Veo-XL monitor. It is highly recommended that installation be performed by a qualified technician.
2.1. Package Contents
- FERMAX Duox Plus Veo-XL 7" Monitor
- Mounting bracket
- Connection terminals
- Screws and wall plugs
- User Manual (this document)
2.2. Mounting the Monitor
- Choose a suitable location on an interior wall, away from direct sunlight, heat sources, and excessive humidity.
- Secure the mounting bracket to the wall using the provided screws and wall plugs. Ensure the bracket is level.
- Route the Duox Plus system wiring through the opening in the mounting bracket.
2.3. Wiring Connections
Connect the Duox Plus bus wires (data and power) to the designated terminals on the monitor. Refer to the wiring diagram provided with your complete Duox Plus system for specific terminal assignments. Ensure all connections are secure and correctly polarized.
Important: Disconnect power to the Duox Plus system before making any wiring connections to prevent electrical shock or damage to the equipment.
3. Operating Instructions
The FERMAX Duox Plus Veo-XL monitor is designed for user-friendly operation. Below are the primary functions and controls.
3.1. Monitor Controls
- Screen: 7-inch color display for video and menu navigation.
- Answer/Call Button: Typically represented by a telephone icon. Press to answer an incoming call or initiate an intercom call (if configured).
- Door Release Button: Often depicted with a key icon. Press to unlock the main entrance door.
- Camera View Button: Usually a camera icon. Press to manually activate the outdoor panel camera and view the entrance area without an incoming call.
- F1 Button: A programmable function button (F1). Its function depends on system configuration (e.g., secondary door release, auxiliary device activation).
- Menu/Navigation Buttons: (If present, typically arrows or a grid icon) Used to navigate through on-screen menus for settings adjustments.
3.2. Basic Operations
- Receiving a Call: When a visitor presses the call button at the outdoor panel, the monitor will ring and display the visitor's video. Press the Answer/Call Button to establish communication.
- Speaking to a Visitor: Once the call is answered, you can speak directly through the monitor's built-in microphone and speaker.
- Opening the Door: During a call, or when viewing the camera, press the Door Release Button to unlock the entrance.
- Monitoring the Entrance: Press the Camera View Button to see who is at the entrance without them having to ring.
- Adjusting Settings: Access the monitor's on-screen menu (if available) to adjust brightness, contrast, ringtone, and other preferences. Refer to the system's advanced programming manual for detailed menu navigation.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your FERMAX Duox Plus Veo-XL monitor.
4.1. Cleaning
- Use a soft, dry, lint-free cloth to clean the monitor screen and casing.
- For stubborn marks, slightly dampen the cloth with water. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the surface.
- Ensure no liquid enters the monitor's openings.
4.2. Environmental Conditions
The monitor is designed for indoor use. Avoid exposing it to:
- Extreme temperatures (below 0°C or above 40°C).
- High humidity or direct water splashes.
- Direct sunlight for prolonged periods, which can cause screen discoloration.
5. Troubleshooting
If you encounter issues with your FERMAX Duox Plus Veo-XL monitor, refer to the following common problems and solutions before contacting technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on screen / Monitor not powering on. | No power supply to the system or monitor. Loose wiring connection. | Check if the Duox Plus system power supply is active. Verify all wiring connections to the monitor are secure. |
| No audio during a call. | Microphone or speaker issue. Volume set too low. | Check monitor volume settings. Ensure the outdoor panel's microphone/speaker is not obstructed. |
| Door release not working. | Wiring issue to the door lock. Lock mechanism fault. | Verify the wiring from the system to the door lock. Ensure the door lock itself is functional. |
| Poor video quality (blurry, distorted). | Interference on the line. Damaged wiring. Outdoor panel camera lens dirty. | Check for sources of electrical interference. Inspect wiring for damage. Clean the outdoor panel camera lens. |
If the problem persists after attempting these solutions, please contact FERMAX technical support or your installer for further assistance. Do not attempt to repair the monitor yourself.
6. Technical Specifications
Below are the key technical specifications for the FERMAX Duox Plus Veo-XL 7" Monitor.
- Model Number: d3b1bb73-2a22-420c-aec2-646bd0c5892f
- Screen Size: 7 Inches
- Resolution: 1280 x 720 pixels
- Aspect Ratio: 16:9
- Screen Surface Description: Glossy
- Image Contrast Ratio: 2000:1
- Package Dimensions: 7.48 x 7.48 x 1.69 inches (19 x 19 x 4.3 cm)
- Manufacturer: FERMAX
- Date First Available: June 26, 2023
7. Warranty and Support
For information regarding the warranty period and terms for your FERMAX Duox Plus Veo-XL 7" Monitor, please refer to the warranty card included with your product or contact your point of purchase. Warranty details may vary by region and retailer.
For technical support, service, or inquiries about spare parts, please contact FERMAX customer service or visit the official FERMAX website. You may need to provide your product model number (d3b1bb73-2a22-420c-aec2-646bd0c5892f) and purchase details.
FERMAX Official Website: www.fermax.com





