Answer:

Pretty cool, eh? The same technology that is used to detect turbulence can also detect the “presence” of someone nearby due to the noise that individual is producing.

-Operating a hair dryer, a nearby noisy shower, singing, loud conversations, can be detected by the LeakAlertor™. The device assumes that someone is in the bathroom, and it will give an indication of the toilet’s status after the noise has ceased. Try this: take a hair dryer, turn it on for about 45 seconds within 5 to 10 feet of the LeakAlertor™, and then turn it off and watch the unit.

-The LeakAlertor™ may occasionally give a status indication before a flush cycle has been completed. This only happens on very quiet toilets, where the device senses that the turbulence has fallen below a given threshold, and therefore it is time to notify the user.