To solve the following problems of a fire extinguisher installed in a building or the like: it is necessary to execute actual article confirmation on the spot and to confirm maintenance information such as an expiration date; and it is necessary to execute inaccurate and inefficient work such as writing-down of an identification code on the spot, and manual input to a system or management by a paper medium, when replacing the fire extinguisher.

In this method, an active tag is attached to the fire extinguisher, and a base station for communicating with the active tag connected to the Internet is installed in a place equipped with the fire extinguisher. That is, a manager receives information transmitted by the active tag via the Internet, and manages the fire extinguisher in real time.