Pool Alarms - Surface Alarms, Subsurface Alarms
https://xeon-wiki.win/index.php?title=Home_Swimming_Pool_Safety_And_Security_For_Kids_And_Parents
If your swimming pool is deeper than 24" check with your local health department to discover whether a weapon or pool alert has been faked. Whether you've got an aboveground pool or an in-ground one, you're going