infrared fire detector

例句：

1. 1.The infrared fire detectors are used to detect fires at night.
   红外线火灾探测器用于夜间探测火灾。
2. 2. The infrared fire detector is a crucial tool for firefighters during emergencies.
   红外线火灾探测器是消防员在紧急情况下的重要工具。
3. 3.The infrared fire detector can quickly alert the fire department when there is a fire.
   红外线火灾探测器可以快速通知消防部门有火灾发生。