1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your QttyElok Wired 7-inch TFT Color Video Doorbell Intercom System. Please read this manual thoroughly before installation and use to ensure proper function and safety. Keep this manual for future reference.
2. Product Overview
2.1. Components
- 1x 7-inch Indoor Monitor
- 1x Video Doorbell (Outdoor Camera)
- 1x EU Power Adapter
- 1x User Manual
- Mounting accessories (screws, cables)
2.2. Key Features
- Durable Outdoor Camera: 90-degree wide-angle lens with built-in infrared light for clear night vision. Rain and dust-resistant cover for outdoor use.
- 7-inch Color Indoor Monitor: High-resolution TFT display. Features 52 selectable ringtones with adjustable volume. Includes a "Do Not Disturb" mode.
- Hands-Free Two-Way Intercom: Enables clear two-way communication between the indoor monitor and the outdoor camera. Allows you to see, hear, and speak to visitors. Supports communication between multiple indoor monitors (if applicable to your setup).
- Monitoring and Unlocking: Monitor your entrance at any time. Compatible with most electric locks, allowing convenient remote unlocking from the indoor monitor. Ideal for apartments, villas, hotels, and offices.
- Easy Installation: Simple 4-wire connection between the outdoor doorbell and indoor monitor. Supports cable lengths up to 100 meters using RVV4 (4-wire), Cat5, or Cat6 cables.

Image: The QttyElok 7-inch indoor monitor and the outdoor video doorbell unit, showcasing the main components of the system.
3. Safety Information
- Ensure all power is disconnected before installation or maintenance.
- Do not expose the indoor monitor to moisture or extreme temperatures.
- Use only the provided power adapter.
- Avoid installing the outdoor camera in direct sunlight or areas with strong electromagnetic interference.
- Consult a qualified electrician if you are unsure about any wiring procedures.
4. Setup and Installation
4.1. Mounting the Outdoor Camera
- Choose a suitable location near your entrance, approximately 1.5 to 1.6 meters (5 to 5.2 feet) from the ground.
- Mount the rain cover (if included) to the wall using screws.
- Secure the outdoor camera unit inside the rain cover.

Image: The outdoor camera unit, showing its design and protective rain cover.
4.2. Mounting the Indoor Monitor
- Select a convenient indoor location, such as a wall in your living room or hallway.
- Attach the mounting bracket to the wall using screws.
- Connect the necessary cables to the monitor before securing it to the bracket.
4.3. Wiring Diagram
The system uses a 4-wire connection between the outdoor camera and the indoor monitor. Ensure correct polarity when connecting the wires.

Image: A simplified wiring diagram showing the connection between the outdoor unit, indoor monitor, and power adapter.
For advanced setups involving electric locks or multiple indoor monitors, refer to the detailed wiring diagram below. Ensure all connections are secure and insulated.

Image: A comprehensive wiring diagram illustrating connections for an electric lock, exit button, and multiple indoor monitors.
5. Operating Instructions
5.1. Answering a Call
- When a visitor presses the doorbell button, the indoor monitor will ring and display the visitor's image.
- Press the Answer button on the monitor to initiate two-way communication.
- Speak clearly into the monitor to communicate with the visitor.

Image: A visual representation of the two-way communication feature, showing a person at the doorbell and another person interacting with the indoor monitor.
5.2. Unlocking the Door
- During a call or while monitoring, press the Unlock button on the indoor monitor to open a connected electric lock.

Image: The indoor monitor displaying the unlock icon, indicating the ability to remotely open a connected door lock.
5.3. Monitoring
- Press the Monitor button on the indoor unit to view the live feed from the outdoor camera at any time.
5.4. Adjusting Settings
- Ringtone Selection: Navigate through the monitor's menu to choose from 52 available ringtones.
- Volume Adjustment: Adjust the ringtone and communication volume via the monitor settings.
- Do Not Disturb Mode: Activate this mode from the monitor settings to silence the doorbell ring for a specified period.

Image: An illustration of the "Do Not Disturb" mode, showing a person sleeping peacefully while the doorbell is silenced.
6. Maintenance
- Regularly clean the camera lens and monitor screen with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Check all wiring connections periodically to ensure they are secure and free from corrosion.
- Ensure the outdoor camera's rain cover is intact and free from obstructions.

Image: The outdoor camera unit shown in a rainy environment, highlighting its IP65 waterproof and dustproof design.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on indoor monitor. |
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| No audio during intercom. |
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| Door lock not opening. |
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| Poor night vision. |
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8. Specifications
| Brand | QttyElok |
| Model Name | QTV7022EL+yin |
| Connectivity Technology | Wired |
| Special Features | Two-way audio, IR Night Vision |
| Indoor/Outdoor Use | Outdoor, Indoor |
| Mounting Type | Wall Mount |
| Video Recording Resolution | 720p |
| Control Method | Touch |
| Voltage | 15 Volts |
| Viewing Angle | 90 Degrees |
| Optical Sensor Technology | CMOS |
| Item Dimensions | 20 x 15 x 5 cm |
| Material | Acrylonitrile Butadiene Styrene (ABS), Plastic |
| Box Contents | 1x 7-inch Indoor Monitor, 1x EU Power Adapter, 1x User Manual, 1x Video Doorbell |
| Country of Origin | China |
9. Warranty and Support
9.1. Warranty Information
QttyElok products typically come with a 2-year quality guarantee. Please retain your proof of purchase for warranty claims. The warranty covers manufacturing defects and malfunctions under normal use conditions.
9.2. Technical Support
For technical assistance, installation queries, or troubleshooting not covered in this manual, please contact our professional technical support team.
Email: service@qtyloo.com
Please provide your model number (QTV7022EL+yin) and a detailed description of the issue when contacting support.