Secure the bracket firmly to the wall using the provided mounting screws. Step 3: Cable Routing and Connection
| Symptom | Likely Cause | Fix from Manual | | :--- | :--- | :--- | | No power, no screen | + & C reversed or loose | Check polarity. Red to +, Black to C. | | Video is snowy or rolling | V wire poor contact or too long | Re-crimp V terminal; shorten cable to <50m. | | Can hear but no video | V wire disconnected | Use multimeter to check continuity on V line. | | Won’t ring (call button) | A wire broken | Connect Green to A at both ends. | | Door unlock doesn’t work | Wrong lock wiring | Ensure lock power is separate; DP-RA01 only sends dry contact. | | Static in audio | Ground loop | Verify C terminal is solidly grounded at PSU. |
Have an assistant press your apartment number on the outdoor lobby panel. The DP-RA01 should emit a clear electronic chime.
Before beginning the installation, verify that your package is complete and that your electrical environment matches the device requirements. Technical Specifications commax dp-ra01 installation manual
Many users skip this section, then complain the video is dark or the call doesn’t work. The includes two hidden adjustment dials:
Use solid copper cables rather than stranded aluminum cables to prevent voltage drops and audio degradation over long distances. 3. Wiring Diagram and Terminal Identification
Houses the main AC power cord, internal transformer, volume controls, intercom paging button, and the dedicated door-lock release button. Secure the bracket firmly to the wall using
The is a surface-mounted audio door phone room unit designed for single-house communication. It provides two-way audio communication with a door station and includes a dedicated button for remote door release. 1. Key Specifications Power Source: AC 100V–240V (50/60Hz). Wiring Type: Door Station to Handset: 2-wire connection.
DR-2G, DR-2A2N, DR-2A3N, DR-2AN, DR-201D, DR-2K, DR-20S, DR-201A Durable Plastic
For a 230V system, you will need to connect the master unit or the power supply to a live, neutral, and ground (if available). | | Video is snowy or rolling |
: Connect the two wires from the door station (e.g., DR-2G, DR-201D, or DR-2K ) to the corresponding terminals on the back of the DP-RA01.
Surface-mounted using a wall-mounting bracket.