Delzone Eclipse 2 Automatic CD Ozone Sanitizing System 0.5g (or 500mg) output corona discharge ozonator - comprises 2 seperate 250mg module cells/power supplies running in parallel. Can be either air pumped or venturi operated. 240v, 50Hz, 0.06A Suits small to medium swimming pools, large spas and commercial spas. Reduce your chemical usage drastically with a correctly fitted quality Del Ozone Generator.