Automated chemical monitoring and control systems for swimming pools and spas, comprising microcontrollers, pH sensors, temperature sensors, oxidation-reduction potential (ORP) sensors, salinity sensors, and conductivity sensors; machines for dispensing, metering, and regulating chemical additives into swimming pools, spas, hot tubs, and water treatment systems; water purification and filtration apparatus; electronically controlled water sanitation systems utilizing chemical, UV, ozone, or ot...

video monitoring system comprising a camera, monitor, power system, recording device, recording media and audio communication units

Unlike other boat propeller guards the "SwimGuard" is designed to maximize swimmer protection, not to protect the prop the SwimGuard design will protect a swimmer from becoming entangled in a boats propeller, especially from a rear strike The sole purpose of the SwimGuard design and name is to protect the swimmer from a boats propeller