... tempered glass7.IP Rating: IP65 Applied Lamp Tube: 23W Self ballastTechnical Features of Our Induction Lamp:1. Electrodeless & long lifetime: ... , UL, CE, FCC, SON, KETI approved)Applications:high pole lamp, billboards, buildings, parks, plazas, tennis courts, railway stations, ... .Differences between low frequency and hign frequency induction lamp: More information or any questions,just feel free ...