... ,RoHS,UL 3/very good temperature control 4/japan technology led lamp 50w50w led bulb 4000lmProduct spesification:No 1Basic ParameterLED Qty1pc2Operation VoltageDC110V/220V3MaterialAluminum ... installation7.Low Power Consumpition,high intensity8.Solid-State,High shock/vibration resistantApplications:1. Bus,Shuttle,Railcar passenger interiors2. Uninterrupted Emergency lighting3. Focused ...