A remote monitoring system which enables the owner and the custodian of a facility to recognize an intrusion from the outside and the owner himself to confirm the details of the intrusion, and which comprises a monitor device (11) for detecting abnormalities of facility and photographing them, and a control server (24) for receiving information from the monitor device (11) to transmit it to mobile terminals (28). The control server 24 (24) comprises an image DB (48) for storing received images in conjunction with the monitor device, a customer/facility specifying unit (44) in the monitor device for specifying mobile terminals carried by customers, and a message preparing unit for preparing messages to be notified to mobile terminals, thereby transmitting messages and contents to mobile terminal (28).