To efficiently repulse a suspicious individual or prevent the same from coming again, and to save evidence for specifying the suspicious individual even if a visitor is the suspicious individual.

A CPU 60 determines whether or not a calling signal output by responding to a press on a calling button 26 is detected (S3). When the calling signal is detected, the CPU 60 sends a command for starting reproduction of a predetermined automatic responsive voice with respect to a voice signal control circuit 51 (S5). If no figure is detected thereafter, the CPU 60 sends a command to the voice signal control circuit 51 for reproducing an instruction for inducing a TV camera 20 to stand at a predetermined position to preferably photograph a face (S9). The CPU 60 determines presence or absence of a figure based on a figure detection signal from a face detection device 206 (S10). When the figure is determined not to exist, the CPU 60 sends a command for executing a crime prevention processing to the voice signal control circuit 55 (S15).