2 sentences

1. 计时器五分钟前就响了。

   jì​shí​qì wǔ fēn​zhōng qián jiù xiǎng le.

   The timer went off five minutes ago.

   Source: OpenSubtitles

2. 请设一个十分钟的计时器。

   qǐng shè yī gè shí fēn​zhōng de jì​shí​qì.

   Please set a timer for ten minutes.

   Source: Dong Chinese Dictionary