To determine that a disaster prevention facility is normally operated by using a communication and display the determination result.

A transmitter 152 of a communication management device 140 transmits a state signal indicating a state of a mechanism of management object via an external communication network, and a remote management device 170 determines whether the state of the mechanism of management object is at a normal value prestored in a memory unit 180. A receiver 154 of the communication management device 140 receives a confirmation completion signal indicating that the remote management device determined that the mechanism of management object is in a normal state via the external communication network, and a display thereof displays a remote controlling in-progress display indicating that the remote management device determined that the mechanism of management object is in a normal state.