TMEZON MZ-VDP-739EM-NE120-2/1
TMEZON Wired Video Door Phone System User Manual
Model: MZ-VDP-739EM-NE120-2/1
1. Introduction
This user manual provides comprehensive instructions for the installation, operation, and maintenance of your TMEZON Wired Video Door Phone Visual Intercom Doorbell System. Please read this manual thoroughly before installation and use to ensure proper functionality and safety.

Figure 1.1: TMEZON Wired Video Door Phone System components.
2. Safety Information
- Ensure all wiring is performed by qualified personnel and complies with local electrical codes.
- Disconnect power before performing any installation or maintenance.
- Do not expose the outdoor unit to extreme temperatures or direct water immersion beyond its IP54 rating.
- Use only the specified power adapter and cables provided or recommended by TMEZON.
- Keep the device away from strong electromagnetic interference.
3. Package Contents
Verify that all items are present in your package:
- Indoor Monitor(s) (Quantity may vary based on purchased kit)
- Outdoor Doorbell Camera(s) (Quantity may vary based on purchased kit)
- Mounting Brackets
- Power Adapter(s)
- 4-Pin Connector Cables
- Screws and Wall Plugs
- User Manual (This document)
4. Product Overview
The TMEZON Video Door Phone System features a 7-inch color LCD touch screen monitor and a 1080P outdoor doorbell camera with a 115-degree wide-angle lens. It supports night vision, automatic snapshot/recording, and multi-device interconnection.

Figure 4.1: Key features of the TMEZON Video Door Phone System.

Figure 4.2: HD 1080P and Infrared Night Vision capability.

Figure 4.3: IP65 Weatherproof design for outdoor durability.
5. Setup and Installation
5.1 Wiring Diagram
The system uses 4-pin wiring for connection between the outdoor doorbell camera and the indoor monitor(s). Ensure correct polarity and secure connections.
Video 5.1: This video demonstrates how to properly use the 4-pin cable for connecting the indoor monitor to the outdoor camera and how to extend connections for multiple monitors or longer distances.
5.2 Outdoor Doorbell Camera Installation
- Choose a suitable mounting location near your door, approximately 1.5 meters (5 feet) from the ground, avoiding direct sunlight or rain.
- Mount the bracket securely to the wall using the provided screws and wall plugs.
- Connect the 4-pin cable from the outdoor unit to the indoor monitor. If connecting to an electronic lock, wire it according to the lock's instructions.
- Attach the outdoor doorbell camera to the mounted bracket.

Figure 5.1: Outdoor doorbell camera in use, highlighting the wide viewing angle.
5.3 Indoor Monitor Installation
- Select a convenient indoor location for the monitor, such as a living room or kitchen.
- Mount the indoor monitor bracket to the wall.
- Connect the 4-pin cable from the outdoor unit to the "DOOR1" input on the indoor monitor.
- If installing multiple monitors, connect them in a master-slave configuration using the "OUT" and "IN" ports on the monitors.
- Connect the power adapter to the indoor monitor and plug it into a power outlet.

Figure 5.2: Indoor monitor interface for communication and unlocking.
6. Operating Instructions
6.1 Answering a Call
When a visitor presses the doorbell button, the indoor monitor will ring and display the visitor's image. Press the Talk button to initiate two-way audio communication.
6.2 Unlocking the Door
During a call or monitoring, press the Unlock button on the indoor monitor to open the connected electronic lock.
6.3 Monitoring
Press the Monitoring button on the indoor monitor to view the live feed from the outdoor doorbell camera at any time.
6.4 Snapshot and Recording
The system can automatically take snapshots or record video when the doorbell is pressed or motion is detected (requires an optional Micro SD card, sold separately). Recorded footage can be reviewed directly on the monitor.

Figure 6.1: Video recording and playback feature.
6.5 Motion Detection
Configure motion detection settings in the monitor's menu. When motion is detected, the system can automatically record video or take snapshots, enhancing security.

Figure 6.2: Smart motion detection in action.
6.6 Intercom Function (Multiple Monitors)
If you have multiple indoor monitors, you can initiate calls between them for internal communication. Use the Transfer Call button to direct an incoming doorbell call to another monitor.
6.7 Tuya App Integration (if applicable)
For remote access and control, download the Tuya Smart app. Follow the app's instructions to pair your device, allowing you to answer calls, monitor, and unlock your door from your smartphone.

Figure 6.3: Remote control via the Tuya App.
7. Maintenance
- Clean the monitor screen and camera lens with a soft, dry cloth. Do not use abrasive cleaners.
- Regularly check all cable connections to ensure they are secure.
- Ensure the outdoor unit's camera lens is free from dirt, dust, or spiderwebs for optimal performance.
- Periodically check for firmware updates from TMEZON to ensure your system has the latest features and security enhancements.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on monitor | Loose cable connection; Power off; Camera malfunction. | Check all 4-pin cable connections. Ensure power is supplied. Contact support if camera is faulty. |
| No audio during call | Microphone/speaker issue; Loose wiring. | Verify wiring. Check monitor settings. |
| Doorbell not ringing | Wiring issue; Monitor volume too low; Doorbell button malfunction. | Check doorbell wiring. Adjust monitor volume. Test doorbell button. |
| Cannot unlock door | Electronic lock wiring issue; Lock malfunction. | Verify electronic lock connections. Test the lock independently. |
| Poor image quality at night | Infrared sensor obstructed; Insufficient ambient light. | Clean camera lens. Ensure no obstructions blocking IR light. |
9. Specifications
- Model Number: MZ-VDP-739EM-NE120-2/1
- Indoor Monitor Screen: 7 inch TFT Color LCD
- Outdoor Camera Resolution: 1080P
- Field of View: 115 Degrees (Outdoor Camera)
- Connectivity: Wired (4-pin)
- Power Source: AC/DC (240 Volts, 5 watts)
- Material: Acrylic
- International Protection Rating: IP54 (Outdoor Unit)
- Operating Temperature: -30°C to 50°C (Outdoor Unit)
- Max. Distance (Monitor to Doorbell): 100-200 meters (with appropriate wiring)
- Max. System Configuration: Up to 4x Monitors + 2x Doorbell Cameras + 2x PIR Alarms + 2x Electronic Locks

Figure 9.1: Product dimensions for indoor monitor and outdoor doorbell.
10. Warranty and Support
TMEZON products typically come with a manufacturer's warranty. Please refer to the warranty card included in your package or visit the official TMEZON website for detailed warranty terms and conditions.
For technical support, troubleshooting assistance, or inquiries about spare parts, please contact TMEZON customer service through their official channels. Contact information can usually be found on the product packaging or the TMEZON website.
Website: Visit the TMEZON Store on Amazon
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