The present invention addresses the problem of providing a protective-equipment article provided with a warning system that can detect information on a position within a building, detect danger to human life such as hyperthermia, and issue a warning, while ensuring safety, work efficiency, and convenience. As a means for solving such problem, provided is an article equipped with a warning system, wherein the warning system includes the following: a position information sensor； a triaxial acceleration sensor, a gyro sensor, a geomagnetic sensor, or a combination thereof； and a means that can autonomously estimate a position from the information emitted from such sensors.
