Definition of 警報器 (けいほうき)
けいほうき
                        警報器
けいほうき
keihouki
Common word
noun
•
                
alarm (fire, burglar, railroad-crossing, etc.), sensor
Other readings:
                警報機【けいほうき】
                Related Kanji
| 警 | admonish, commandment | 
| 報 | report, news, reward, retribution | 
| 器 | utensil, vessel, receptacle, implement, instrument, ability, container, tool, set | 
| 機 | loom, mechanism, machine, airplane, opportunity, potency, efficacy, occasion |