The Global Water SIP Ozone Membrane is an automatic water sanitizer for use with any reservoir-fed water cooler. This small unit fits easily within or on the backside of your water cooler and uses electricity to change regular oxygen into ozone through electrical discharge and reformation. This automatic water sanitizer is fully customizable, so you can easily choose the daily off and on times as well as sanitization duration. Additionally, this sanitizer consumes far less energy than conventional UV light bulbs and will assuredly help you lower your CO2 emissions thereby helping the environment. This unit also features a sleep mode to save your water cooler's compressor on power for long period of non-use. If you are looking to enjoy fresh and clean water everyday and eliminate high energy costs and UV light bulb replacements, the Global Water SIP Ozone Membrane is the perfect match.