PoolEye(TM) alarms are equipped with the most advanced pool alarm technology available subsurface wave detection. PoolEye(TM) alerts you to accidental falls into the pool and unwanted pool intrusion while eliminating false alarms from wind, rain, falling leaves, etc. It detects objects weighing 15 lbs or more entering the pool, and all models feature adjustable sensitivity. A PoolEye(TM) alarm is an essential addition to any pool safety program.In addition to subsurface wave detection technology, the PoolEye(TM) PE22 for inground pools features an added layer of protection Infrared "Night Vision", which monitors the pool area. The PE22 also comes equipped with an in-home remote alarm that alerts you with human voice announcements and/or siren, depending on the level of intrusion.