To immediately inform an operator of an alarm, etc., without impeding the procedure of control operation for an electric lock and a crime preventive sensor by displaying the occurrence of abnormality to the electric lock and the generation of an alarm by the crime-preventive sensor on an alarm list screen provided differently from a control screen for controlling and operating them.

A crime-preventive sensor 8 is installed on the door of each living room and when the electric lock 101 is locked or when an 'alarm setting' state is switched to from a center device 1, a person enters the room by operation other than an ID card or operation other than locking control from the center device 1; if the crime-preventive sensor 8 operates, a terminal machine 3 judges that a trespasser has entered the room and sends a crime-preventive alarm signal to the center device 1. The center device 1 once receiving the crime-preventive alarm signal displays that on a display device 14 by changing the color and shape of a symbol. For example, the alarm list screen L where a crime-preventive alarm, equipment abnormality of the electric lock 101, and its occurrence time and occurrence place, etc., are displayed in the form of messages is displayed below a map screen M.