They can be used to alert you to the doorbell, telephone or a baby's cry as well as other sounds such as a smoke detector or burglar alarm.
(They; can be used; to alert you to the doorbell, telephone or a baby's cry as well as other sounds such as a smoke detector or burglar alarm) (They; to alert; you; to the doorbell, telephone or a baby's cry as well as other sounds such as a smoke detector or burglar alarm)
They They
can be used to alert
to alert you to the doorbell, telephone or a baby's cry as well as other sounds such as a smoke detector or burglar alarm
you to the doorbell, telephone or a baby's cry as well as other sounds such as a smoke detector or burglar alarm