My elder sister installed doorbells in the house, right from our gate. It is because a lot of people come to our house, looking for my dad or mom, sometimes herself. Neighbors, concerned citizens and people with medical needs, you name it, early in the morning to anytime of the day, they would visit the house for some free services. Busy as they are, our parents are not always in the house, and most of the time, our friends and visitors come when who is left in the house is resting. Her doorbell serves a lot of good, when everyone just rings it; saves their voices, in the place where doorbells are not common.