报警器
bào​jǐng​qì

alarm

2 sentences

  1. 他不小心触动了报警器的开关。

    tā bù xiǎo​xīn chù​dòng le bào​jǐng​qì de kāi​guān.

    He accidentally triggered the alarm switch.

    Source: Dong Chinese Dictionary

  2. 发生火灾时，报警器会自动响起。

    fā​shēng huǒ​zāi shí, bào​jǐng​qì huì zì​dòng xiǎng​qǐ.

    The alarm will sound automatically in the event of a fire.

    Source: Dong Chinese Dictionary