Question

Write any one use of following,
Electric doorbell
sirens,
telephones
radio
stereos
smoke detectors
security system alarm

Answer 1

Answer:

1.for open door if u are tired or ill

2.dont know

3.for communication

4.for listen news or music

5.dont know

6.for say that smoke is harmful for health

7.for show that the thief is in your home,school or colleges

Explanation:

here ur answer