Alarm goes offPersian: زنگ هشدار به صدا درمی آید
English Definition: Refers to the moment an alarm starts ringing. Example: They get up as soon as the alarm goes off. به محض اینکه زنگ هشدار به صدا درمی آید، بیدار می شوند.  
 ...  [مشاهده متن کامل]  
The alarm went off at 7 o'clock. 
A car alarm went off in the middle of the night ( = started ringing ) . 
A car alarm went off in the middle of the night ( = started ringing ) .