... lamps, traits are high lighting efficacy, long lifetime, high CRI, better lighting, constant wattage, etc. Model No.: VE_HB_8101 Principle: Electrodeless Wattage ... : -20~+50°C Working frenquency: 0.25MHz Photometric Dimension ApplicationsStadiums, workshops, warehouses, airports, stations, amusement parks, exhibition halls, shopping malls, etc ...