Even with a perfect , problems arise. Here is a quick field guide:
| 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 | commax dp-ra01 installation manual