1. Introducció i finalview
This manual provides detailed instructions for the installation, operation, and maintenance of your Commax 6-Apartment Building Audio Intercom Set. This system is designed to facilitate clear audio communication between visitors at the building entrance and residents within their apartments, offering enhanced security and convenience. The set includes a robust 6-button lobby unit and six individual household handsets, powered by a single 12V power supply.

Image 1.1: Complete Commax 6-Apartment Building Audio Intercom Set.
2. Components inclosos
The Commax 6-Apartment Building Audio Intercom Set includes the following components:
- 1 x 6-button lobby unit (Model: DR-6UM)
- 6 x Household handsets (Model: DP-SS)
- 1 x 12V Power Supply (Model: RF-12015S)
- 1 connector de 4 pins
- 1 connector de 6 pins
Note: Wiring cable is not included and must be purchased separately.
3. Configuració i instal·lació
3.1. Precaucions de seguretat
- Assegureu-vos que l'alimentació estigui desconnectada abans de començar qualsevol instal·lació o cablejat.
- Seguiu tots els codis i regulacions elèctriques locals.
- Utilitzeu les eines i l'equip de protecció individual adequats.
- Si no esteu segur de qualsevol pas, consulteu un electricista qualificat.
3.2. Instal·lació de la unitat de vestíbul (DR-6UM)
The DR-6UM lobby unit is designed for flush-mounted installation. It features a durable aluminum material construction.

Imatge 3.1: Frontal view of the DR-6UM Lobby Unit.

Image 3.2: DR-6UM Lobby Unit Dimensions and Flush-Mount Installation. Approximate dimensions: 142mm (width) x 250mm (height) x 50mm (depth).
3.3. Instal·lació del telèfon (DP-SS)
The DP-SS handsets are designed for surface-mounted installation within each apartment.

Imatge 3.3: Frontal view of the DP-SS Handset.

Image 3.4: DP-SS Handset Dimensions and Surface-Mount Installation. Approximate dimensions: 70mm (width) x 210mm (height) x 80mm (depth).

Imatge 3.5: Darrere view of the DP-SS Handset with Wiring Diagram.
3.4. Esquema de cablejat
Proper wiring is crucial for the system's functionality. The lobby unit requires a DC12V, 1.5Amp power source and provides power to the handsets. The system uses a common 3-wire connection plus individual 1-wire for the lobby unit, and 6 wires for the handset (4 to door station, 2 to door lock).

Image 3.6: System Wiring Diagram. Ensure all connections are secure and follow the diagram precisely. An electric door strike and its power source are not included.
4. Instruccions de funcionament
4.1. Visitor Calling a Resident
- The visitor presses the corresponding apartment button on the DR-6UM lobby unit.
- The DP-SS handset in the selected apartment will ring.
- The resident picks up the handset to establish two-way audio communication with the visitor.
4.2. Resident Opening the Door
- During an active call with a visitor, the resident can press the door release button on their DP-SS handset.
- This action will activate the connected electric door strike (not included), allowing the visitor to enter.
5. Manteniment
- Neteja: Use a soft, dry cloth to clean the surfaces of the lobby unit and handsets. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
- Comprovacions de connexió: Periodically inspect all wiring connections to ensure they are secure and free from corrosion or damage. Loose connections can lead to intermittent operation or system failure.
- Condicions ambientals: Ensure the units are not exposed to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture, which can affect performance and lifespan. The lobby unit is designed for outdoor use but should be protected from direct heavy rain if possible.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No audio from handset or lobby unit. | Loose or incorrect wiring; power supply issue; faulty unit. | Check all wiring connections according to the diagram (Image 3.6). Verify the 12V power supply is active and connected. If issues persist, contact support. |
| Handset does not ring when button is pressed. | Incorrect wiring for specific apartment; faulty button on lobby unit; handset power issue. | Confirm the correct apartment button is pressed. Check the individual wiring for that specific handset. Ensure the handset is receiving power from the lobby unit. |
| Door release function not working. | Electric door strike not connected or powered; incorrect wiring to door lock terminals; faulty handset button. | Verify that an electric door strike is properly installed and has its own power source (if required). Check the 2-wire connection from the handset to the door lock. |
| Intermittent communication. | Loose connections; interference; damaged wiring. | Secure all wiring connections. Ensure wiring is not running parallel to high-voltage lines. Inspect cables for any physical damage. |
7. Especificacions
Detailed specifications for the Commax DR-6UM Lobby Unit and DP-SS Handset are provided below:

Image 7.1: Detailed Specifications for DR-6UM and DP-SS.
7.1. Door Station DR-6UM
| Característica | Especificació |
|---|---|
| Número de model | DR-6UM |
| Font d'alimentació | DC12V, 500mA |
| Mètodes de comunicació | Comunicació síncrona |
| Cablejat | 3 cables comuns + 1 cable individual |
| Unitat d'habitació compatible | Commax Handset: DP-SS, DP-MSS, DP-TS, DP-KSS |
| Distància de transmissió | Ø0.5: 30m; Ø0.65: 50m; Ø0.8: 70m; Ø1.0: 100m |
| Temperatura | -10°C (tested up to -40°C) to +50°C |
| Dimensions (mm) | 142x250x50 (mm) |
| Tipus de muntatge | Tipus encastat |
7.2. Room Station DP-SS
| Característica | Especificació |
|---|---|
| Model | DP-SS |
| Font d'alimentació | DC12V (des de la placa de porta) |
| Tipus de muntatge | Muntatge en superfície |
| Cablejat | 6 wires: to door station: 4 wires; to door lock: 2 wires |
| Dimensions amb auricular | 70x210x80 (mm) |
| Temperatura de funcionament | 0 °C ~ 50 °C |
8. Garantia i Suport
For technical assistance, warranty claims, or further inquiries regarding your Commax 6-Apartment Building Audio Intercom Set, please contact your authorized Commax dealer or the point of purchase. Retain your proof of purchase for warranty validation.
You may also find additional information and support resources on the official Commax website or through the retailer where the product was purchased. For general product information, you can visit the product page at amazon.com/Commax-6-Apartment-Building-Audio-Intercom/dp/B01N1X620E.





