It is the alarm that give the status of the person in unattendent engine room.
something broke
The abbreviation of Engg. means Engineering.
see link below
This means a scientific achievement, or hypothesis.
Flow Line
No, they are quite apart form each other. I mean they are not related at all.
home alarm systerm
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what N.C. mean in diagram alarm
If You Mean As A Animal That Eats The Dead One Then A shar Is One And A Seal And Really Any Other Meat Eaters.
Alarm
When the LED light on an aftermarket alarm stays on, it means that the alarm is active. The light generally shows that the alarm status is "ready."
Engineering is the application of scientific knowledge for practical purposes
This can vary based on the type of alarm and manufacturer. Refer to the user manual for your alarm system to troubleshoot any possible problems with your alarm.
The idiom "they froze in their tracks" means that they stopped what they were doing. Example- The robbers froze in their tracks when they heard the alarm.
the alarm clock
If you mean Marine Biologist, it's someone who studies marine life (stuff that lives in the sea)