Many parents don’t consider it a necessity since their reasoning is that their children don’t use the pool unless they are around. What is worse, many of them place a fence around the pool considering that it will give enough security. Although that is true, someone may have left the door unsecured or the child may have found an access that a grown up wouldn’t have noticed. Unfortunately, children are very curious, and can escape the attention of a distracted parent who went to answer the phone or felt asleep under the sun. It only takes a couple of minutes for the inevitable to occur. So, a swimming pool alarm isn’t only a system placed for those moments when you are not around, but a complement to eliminate the human risk factor. A machine is capable of doing what we can’t: perpetual surveillance. Like it or not, we humans are more prone to make mistakes than them.