The is a wall-mounted room unit (handset) designed for single-house doorphone systems. It primarily functions as an intercom to communicate with a door station and control an electronic door release. Pre-Installation Safety Guidelines
| Terminal | Standard Function | Wire Color (Common Practice) | | :--- | :--- | :--- | | | Positive power input | Red | | 2 (or GND) | Common ground / negative | Black | | 3 (or AUDIO) | Audio signal from door unit | White or Yellow | | 4 (or CALL / TALK) | Call button signal / voice switch | Blue or Green | | 5 & 6 | Secondary door release (rarely used) | Optional | commax dp-ra01 installation manual
If you encounter a problem not listed here, check your connections with a multimeter first. Nine times out of ten, the issue is a loose wire or reversed polarity. Happy installing. COMMAX DP-RA01 The is a wall-mounted room unit
Do not skip this step. Installing a door phone involves low-voltage electricity, but mistakes can fry the camera or the monitor. Separate the Mounting Bracket: If the DP-RA01 has