: Ensure the power source (AC 100-240V) is turned off at the breaker before touching any wires.
The DP-RA01 is polarity sensitive . Swapping terminals 1 and 2 will permanently damage the unit.
Before beginning the installation, review the core physical and electrical parameters of the COMMAX DP-RA01 Specification AC 100V – 240V, 50/60 Hz External power plug or internal hardwire connection Wiring to Door Station 2-Wire (Non-polarity) Easy connection from master room unit to entry panel Wiring to Door Release Requires an additional power supply for the lock mechanism Expandability Max 1 Door Station + 3 Handsets Configurable for internal intercom calls between rooms Compatible Door Units DR-201D, DR-2G, DR-2A2N, DR-2K, etc. Works with multi-button and surface-mount door panels Mounting Mechanism Surface Mount
At the door camera or call button unit (e.g., Commax DRC-4R), match the terminals exactly: commax dp-ra01 installation manual
These connect directly to the corresponding Terminals 1 and 2 on your Commax outdoor door unit (e.g., DR-201D or DR-2K). This line carries both bidirectional audio signals and power to the outdoor panel.
| Terminal Label | Color Code (Standard) | Function | Typical Connection | | :--- | :--- | :--- | :--- | | | Red | +12V DC Power | Power Supply Unit (PSU) + | | V | Yellow/White | Video Signal | Door Camera Video Out | | A | Green | Audio / Call Signal | Door Camera Audio & Call | | C | Black | Common Ground (GND) | PSU - & Camera GND |
: Plug the unit into a standard AC outlet. Avoid handling the power cable with wet hands to prevent electric shock. Compatible Equipment : Ensure the power source (AC 100-240V) is
Pick up the handset and speak into it to test the two-way audio clarity.
Once the installation is complete, test the system to ensure it's functioning correctly:
Re-check the dedicated door release contact wiring connections on your setup. If you need help tailoring this setup, tell me: What are you connecting to? What is the estimated cable run distance between units? Are you connecting an electric door strike or lock ? Share public link Before beginning the installation, review the core physical
Do not connect the electric lock directly to the communication lines. The door release mechanism must be powered by an external AC/DC transformer matched to your lock's rating.
Based on the analysis of the Commax DP-RA01 installation manual, the following potential issues and concerns are identified:
2-wire connection to outdoor door unit (non-polarity); 2-wire connection to electric door release Mounting Type: Wall-mounted (surface mount)
Check Terminal 4 connection. Ensure the door release button clicks physically. The coming out of your wall. Any specific issues you are experiencing during setup.
The master door station must be programmed to call the correct monitor ID number. Refer to your door unit manual for call routing.