When I visited my sister at her house, I was surprise to experience her new driveway alarm. She installed the alarm just recently when she saw her neighbor installing one. They had a chat and she ended up letting her neighbor install it. I was asking how much it cost her but she doesn’t want to tell me. Maybe it’s expensive. She knows I am going to react negatively again. But anyway, I was amused with the alarm. It was fun to play with it. LOL!