PROXIMITY ALARM DEVICE

A proximity alarm device includes a microcomputer, a speaker, an electric board, and a board temperature sensor housed in a housing of the proximity alarm device. The board temperature sensor is mounted on a sensor mounting surface of the electric board, and outputs board temperature information indicating the detected board temperature to the microcomputer. An arithmetic unit of the microcomputer estimates and calculates the speaker temperature based on the board temperature information, and a correcting unit corrects the approach notification sound based on the estimated and calculated speaker temperature.