Here is the same sump pump that was shown in the last photo, the main difference between the pictures is the installed WaterWatch alarm. This alarm is actually a very important safety feature to have in place on a sump pump. This alarm will sound if water rises above the point where the pump should turn on. It is important because it allows the owner time to address the problem, and hopefully fix it before the area floods. One of the best ways to make sure your pumps are functioning properly is to make sure to get annual maintenance on your system!