| 摘要 |
PROBLEM TO BE SOLVED: To provide an alarm for enabling a user to easily recognize the detection result of display object gas whose concentration is highly needed to be recognized.SOLUTION: An alarm 100 includes: a sensor part 2 capable of detecting a plurality of gases; and a display part 3 capable of simultaneously displaying the detection result of each of the plurality of gases in a first display state. The alarm 100 is configured such that when the concentration of predetermined gas as a part of the plurality of gases exceeds a display range, and any gas other than the predetermined gas is selected as display object gas by a user, the first display state is switched to a second display state that the detection result of the predetermined gas (non-display object gas) is not displayed by the display part 3, and the detection result of the display object gas other than the predetermined gas is enlarged and displayed by the display part 3.SELECTED DRAWING: Figure 9 |
