The installation requires mounting the bracket and completing the non-polarity wiring between units.
Commax DP-RA01 is a room station handset used in audio doorphone systems, typically paired with a door station (like the DR-2K) to provide two-way communication and remote door release. 華輝電子(集團) 有限公司 Installation & Wiring Guide commax dp-ra01 installation manual
Align the slots on the base of the handset with the hooks on the wall bracket and pull the unit down slightly to secure it. commax dp-ra01 installation manual