... Optimized light extraction system delivery high lumens.5. No RF interference, Lead free.6. Long lifetime - LED feature, reasonable ... , such as Epoxy, ABS, PC, 14. No electromagnetism interference, no high power switch and inductance parts, no environment electromagnetism ... Solid-state, high shock / vibration resistant 2. No RF interference, No buzzing noise 3. No fluorescent flickering4. No hazard ...