Though it may look a little strange, the design of the original Water Alarm allows it to be the most moisture-sensitive, compact and indestructible alarm on the market. It's unique bell tower amplifies the alarm so it can sound longer and louder than any other alarm. The four stainless steel legs can detect moisture at the first sign of leakage--well before damage can occur. They sink deep into carpet, fabric or other materials that would take up to an inch of water above the carpet to set off other alarms. Don't risk the preservation of your home to inferior alarms, trust the original Water Alarm.