3. Accurate constant-curren- t driving with current fluctuation less than 1mA.
4. Strict temp control: Temp up at work is below 20 degree. Overheat protection will automatically starts if the operating temp is more than 70 degree.
5. Special circuit protection: The protection can prevent whole circuit from current overflow or unbalanced caused by single failed LED, saving the whole lamp.
6. Variable power: Total power can be reduced to half or 2/3 et on request to save energy.