... ..CE,RoHS approved 2.Energy saving 3.Aesthetic appearance LED emergency light bulb Color temperature; 3000°K/5000°K /6500°K ... dazzling light point, uneven brightness, uneven color temperature , radiation bad, easy faulty soldered joint and so on shortcoming.2) Advanced design of ... the driver, Wide range input voltage,From 16VDC to 27VDC,The bulb can work stably,The light output will ...