- Brand:Â Nu-CalgonApprovals:Â ETL Listed, ETL Classified, CARB CompliantCountry of Origin:Â USInput Voltage:Â 110/120-240/277VACManufacturer Name:Â Nu-CalgonMode Options:Â Continuous or air flow sensor modePOWER:Â 25W/525mWRun Time:Â 30,000 hoursSafety Ratings:Â UL 2998, UL 867, UL 2043, UL 1598, CSA C22.2UV Type:Â UVC-LED