| 摘要 |
PROBLEM TO BE SOLVED: To provide an alarm for enabling a user to clearly recognize which gas has concentration exceeding a predetermined range.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 (alarm object gas) as a part of the plurality of gases exceeds a predetermined range, the first display state is switched to a second display state that the detection result of at least a part of any gas other than the alarm object gas is not displayed by the display part 3, and the detection result of the alarm object gas is enlarged and displayed by the display part 3.SELECTED DRAWING: Figure 5 |
