: An additional 2-wire connection is required for the door release mechanism, which may need its own dedicated power source depending on the specific door lock used.
: It is designed to work with various Commax door stations, including the DR-2G, DR-201D, and DR-2K . Essential Manual Links commax dpra01 installation manual link
Commax DP-RA01 is a reliable audio door phone unit designed for straightforward 2-wire installation, making it a popular choice for residential security. : An additional 2-wire connection is required for
: An additional 2-wire connection is required if you are installing an electric door strike. including the DR-2G