By following the steps and detailed wiring instructions below, you will be able to successfully install and configure either a single unit or a master-slave pair of Commax DP-RA01 audio intercoms.
Before starting, please read these safety guidelines to prevent electric shock or damage to the unit: commax dp-ra01 installation manual
Check AC/DC input voltage with a multimeter. Ensure power cord is seated. By following the steps and detailed wiring instructions