1. Introduction
Thank you for choosing the Commax CMV-70S 7-inch LED Intercom System. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new intercom system. Please read this manual thoroughly before use and keep it for future reference.
2. Safety Information
- Ensure all electrical connections are made by a qualified professional to prevent electric shock or fire.
- Do not expose the unit to water, moisture, or extreme temperatures.
- Do not attempt to open or repair the unit yourself. Refer all servicing to authorized personnel.
- Use only the specified power supply (AC 100V - 240V).
- Keep the unit away from direct sunlight and heat sources.
3. Package Contents
Verify that all items listed below are included in your package. If any items are missing or damaged, please contact your retailer.
- Commax CMV-70S Monitor Unit
- Mounting Bracket
- User Manual
- Screws (T)4 x 18mm (4 pcs)
- Screw (M)3 x 6mm (1 pc)
- Connection Cables (2P(1EA), 4P(3EA))
- Door Camera (if included in your specific kit)

Figure 3.1: Package Contents
4. Product Overview
The Commax CMV-70S features a 7-inch LED screen and intuitive touch controls for visitor communication and door access. Familiarize yourself with the components of the monitor unit:

Figure 4.1: Front Panel Components
Front Panel Components
| No. | Part Name | No. | Part Name | No. | Part Name |
|---|---|---|---|---|---|
| 1 | 7" TFTLCD | 2 | Speaker | 3 | Monitoring button |
| 4 | Guard and interphone button | 5 | Door release button | 6 | Menu button (touch) |
| 7 | Talk button | 8 | C-MIC | 9 | Menu button (side) |
| 10 | Enter button | 11 | △ button | 12 | ▽ button |
| 13 | Power ON/OFF | 14 | Connecting terminals |
5. Setup
5.1 Mounting the Monitor
- Choose a suitable location for the monitor, typically near the main entrance or a central area.
- Secure the mounting bracket to the wall using the provided screws. Ensure it is level and firmly attached.
- Connect all necessary wiring to the monitor's connecting terminals (refer to Section 5.2).
- Carefully attach the monitor unit to the mounting bracket.
5.2 Wiring Connections
The CMV-70S system requires professional hardwire installation. Refer to the diagram below for terminal connections. Ensure power is disconnected before making any wiring connections.

Figure 5.1: Connecting Terminals (Rear View)
- Power Connection: Connect the AC 100V - 240V power supply to the designated power terminals.
- Door Camera Connection: Connect the door camera to the 'CAM' terminals. The system supports up to two door cameras.
- Intercom Connection: For multi-unit setups or additional indoor phones, connect them to the 'INTER' terminals.
- Door Lock Release: Connect the electronic door lock to the appropriate terminals for remote release functionality.
This system is expandable up to two screens, two door cameras, and two indoor phones, especially when utilizing Fine View technology for single-house applications.
6. Operating Instructions
The Commax CMV-70S is designed for ease of use with its touch-sensitive buttons.
6.1 Basic Functions
- Answering a Call: When a visitor presses the call button on the door camera, the monitor will ring and display the visitor's image. Press the Talk button (7) to communicate.
- Monitoring: Press the Monitoring button (3) to view the outside area through the door camera at any time.
- Door Release: During a call or while monitoring, press the Door release button (5) to unlock the door.
- Intercom/Guard Call: Press the Guard and interphone button (4) to initiate a call to another indoor unit or the guard station (if configured).
6.2 Menu Navigation
The CMV-70S features both touch and side menu buttons for system settings.
- Press the Menu button (touch) (6) or Menu button (side) (9) to access system settings.
- Use the △ button (11) and ▽ button (12) to navigate through menu options.
- Press the Enter button (10) to select an option or confirm a setting.
- The Power ON/OFF button (13) controls the unit's power.
7. Maintenance
- Cleaning: Wipe the monitor screen and body with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Power Cycle: If the unit is unresponsive, try turning it off using the Power ON/OFF button (13), waiting a few seconds, and then turning it back on.
- Regular Checks: Periodically check all wiring connections to ensure they are secure.
8. Troubleshooting
If you encounter issues with your Commax CMV-70S, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on screen | Power off; Loose connection; Faulty camera | Check power (13); Verify wiring (14); Test camera connection. |
| No sound during call | Volume too low; Faulty speaker/microphone; Loose connection | Adjust volume in menu; Check wiring; Contact support. |
| Door lock not releasing | Incorrect wiring; Faulty lock; Insufficient power | Verify lock wiring; Test lock independently; Ensure adequate power supply. |
| Monitor unresponsive | Software glitch; Power issue | Perform a power cycle (13); Check power connection. |
If the problem persists after trying these solutions, please contact Commax customer support or a qualified technician.
9. Specifications
| Feature | Specification |
|---|---|
| Manufacturer | Commax |
| Model Number | CMV-70S |
| Screen Size | 7-inch LED |
| Power Source | Corded Electric (AC 100V - 240V) |
| Power Consumption | 6 Watts |
| Connectivity Technology | Wired |
| Installation Method | Professional Hardwire |
| Compatible Devices | Apartment complex, single house |
| Expandability | Up to 2 screens, 2 door cameras, 2 indoor phones (Fine View technology for single house) |
| Included Components | Security screen, door camera |
| Item Weight | 1.2 Kilograms |
| Package Dimensions | 30.4 x 24.8 x 6.9 cm |
| Material | Plastic |
| Color | Blue |
| Alert Type | Motion only |
| Batteries Required | No |
10. Warranty and Support
Commax products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official Commax website. Keep your purchase receipt as proof of purchase for warranty claims.





