Since it is non-polar, the order of the two wires does not matter, which prevents damage during installation. 2. Connection Diagram
Keep the intercom wiring at least 30cm away from AC power lines to avoid "humming" or static noise in the audio. commax dpra01 installation manual link
Attach the metal or plastic wall bracket to the wall box using the provided screws. Since it is non-polar, the order of the
Do not install the unit in areas with high humidity or direct sunlight, as this can degrade the internal circuitry. 🔍 Troubleshooting Common Issues Since it is non-polar
The DP-RA01 usually triggers a dry contact on the master unit. Check the wiring between the master station and the electric strike.