Samsung KP40D-BDPI/XAR DPIM Door Phone Interface Module (Refurbished)Key Features: Mfr. Part #: KP40D BDPI XAR Compatible for All Samsung DCS Phone Systems. The Door phone interface module adapts any DLI circuit for use with the door phone unit. Commonly used to request entry through locked doors or as room monitoring box. Provides contact control to be used with user provided electric door lock. DPIM is wall mounted & weather resistant. Provides door phone interface for KP200 door phone. Condition: Refurbished