1. Introduction
This document provides comprehensive instructions for the installation, operation, and maintenance of your LIBO V70Fx2+520C-2 7-inch Wired Video Intercom System. This system is designed to enhance your home security and convenience by allowing you to see and communicate with visitors before opening your door.
The system includes a 7-inch TFT-LCD monitor and an external infrared (IR) camera. It offers features such as clear video display, night vision, two-way audio communication, and door unlocking capabilities. It is suitable for various applications including apartments, villas, hotels, offices, and public buildings.

Figure 1: LIBO 7-inch Wired Video Intercom System Overview
2. Package Contents
Please verify that all items listed below are included in your package. If any items are missing or damaged, please contact customer support.
- 1 x Outdoor Unit (Camera)
- 2 x Indoor Unit (Monitor)
- 2 x Power Adapter
- 1 x White Cable
- 2 x Short Wires
- 2 x Mounting Plate
- 2 x Bag of Screws
- 1 x User Manual

Figure 2: Package Contents
3. Specifications
| Feature | Description |
|---|---|
| Indoor Unit Model | XSL-V70F |
| LCD Screen | 7 inch TFT-LCD |
| Resolution | 800x480 |
| Ring Tone | 25 Chord |
| Input Voltage | AC100V-240V |
| Output Voltage | DC15V/1200mA |
| Power (Standby/Working) | ≤1W / ≤10W |
| Operating Temperature | -20℃ to 60℃ |
| Intercom Timing | 30 seconds |
| Monitoring Timing | 90 seconds |
| Video Signal | 1VP-P |
| Indoor Unit Wiring | 4 or 5 PIN Line RVV |
| Indoor Unit Installation | Wall Mount |
| Indoor Unit Dimensions | 240 x 150 x 25mm (L/W/H) |
| Indoor Unit Material | ABS Plastic and Acrylic Panel |
| Outdoor Camera Model | 520C-2 |
| Camera Lens | 1/4" CMOS 700TV Lines |
| Night LED | 6 Infrared Lights (within 2m) |
| Angle | 90 degrees |
| Resolution | 700TVL |
| Power (Standby/Working) | ≤0W / ≤2W |
| Outdoor Unit Wiring | 4 or 2 PIN Line RVV |
| Outdoor Unit Installation | Integrated Installation |
| Outdoor Unit Dimensions | 215 x 125 x 45mm (L/W/H) |
| Outdoor Unit Material | Aluminum Alloy |
| Max Transmission Distance | 100 meters (using RVV4 * 1.0 cable) |
| Item Weight | 1.81 Kilograms |
| Connectivity Technology | Wired |
| Indoor/Outdoor Use | Outdoor |
4. Setup
4.1 Tools Required
Before beginning installation, ensure you have the following tools:
- Phillips Head Screwdriver
- Electric Drill
4.2 Wiring Diagram
Proper wiring is crucial for the system's functionality. Refer to the diagram below for connecting the outdoor camera unit to the indoor monitor units. Ensure all connections are secure.

Figure 3: System Wiring Diagram (Electronic lock not included)
For a visual guide on wiring and installation, please refer to the following video:
Video 1: General Installation Guide for a Video Intercom System. This video demonstrates the steps for connecting and installing a video intercom system, including wiring and mounting procedures.
Video 2: How to Install a Video Intercom. This video provides a step-by-step visual guide for installing a video intercom system, covering mounting and wiring aspects.
4.3 Mounting the Outdoor Unit
Select a suitable location for the outdoor camera unit, typically near your entrance. Ensure it is at an appropriate height for clear viewing of visitors. Use the provided mounting plate and screws to securely attach the unit to the wall.

Figure 4: Outdoor Camera Unit Components
4.4 Mounting the Indoor Unit
Choose a convenient indoor location for each monitor unit, such as a hallway or living area. Mount the indoor unit using the provided mounting plate and screws, ensuring it is within reach and visible for easy operation.

Figure 5: Indoor Monitor Unit Controls
5. Operating Instructions
5.1 Answering Calls
When a visitor presses the call button on the outdoor unit, the indoor monitor(s) will ring. Press the 'Talk' button on the indoor monitor to establish two-way audio communication with the visitor. The monitor will display the visitor's image.
5.2 Monitoring
To view the outdoor area without a visitor pressing the call button, press the 'Monitor' button on the indoor unit. This allows you to observe activity outside your door at any time.
5.3 Unlocking the Door
If an electronic lock is connected to the system (sold separately), you can unlock the door remotely by pressing the 'Unlock' button on the indoor monitor during an active call or while monitoring.
5.4 Night Vision
The outdoor camera is equipped with 6 infrared lights, enabling clear visibility of visitors even in low light conditions or complete darkness. This feature activates automatically.

Figure 6: Night Vision Capability
6. Maintenance
To ensure optimal performance and longevity of your video intercom system, follow these maintenance guidelines:
- Cleaning: Regularly wipe the indoor monitor screen and outdoor camera lens with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Cable Inspection: Periodically check all wiring connections for any signs of wear, damage, or loose connections.
- Environmental Protection: Ensure the outdoor unit is protected from direct heavy rain or extreme weather conditions, even though it is designed for outdoor use.
- Software Updates: Check the manufacturer's website for any available firmware or software updates to improve system performance and security.
7. Troubleshooting
If you encounter any issues with your LIBO video intercom system, refer to the following common troubleshooting steps:
- No Power: Ensure all power adapters are securely plugged into working outlets and connected correctly to the indoor units. Check for any tripped circuit breakers.
- No Video/Audio: Verify all wiring connections between the outdoor unit and indoor monitors are secure and correctly aligned according to the wiring diagram.
- Poor Video Quality: Check the camera lens for dirt or obstructions. Ensure adequate lighting for the outdoor unit, especially if night vision is not activating properly. Adjust screen brightness and color settings on the indoor monitor.
- Door Unlock Not Working: Confirm that the electronic lock is correctly wired to the outdoor unit and receiving power. Test the lock independently if possible.
- No Ringtone: Check the ringtone volume settings on the indoor monitor. Ensure the outdoor call button is functioning correctly.
If these steps do not resolve the issue, please contact customer support for further assistance.
8. Warranty and Support
Your LIBO V70Fx2+520C-2 Video Intercom System comes with the following:
- 30-Day Refund Policy: If you are not satisfied with your purchase, you may be eligible for a refund within 30 days.
- 1-Year Warranty: The product is covered by a 1-year warranty against manufacturing defects.
- Lifetime Support: LIBO Smart Home provides lifetime technical support for this product.
For warranty claims, technical assistance, or any other inquiries, please refer to the contact information provided in your product packaging or visit the official LIBO Smart Home website.