... constant current source , it will be more energy efficient 2.Input voltage : 85-264V,easy to use and safty ... 50000 hours .4. Our common light ratio :8:1 , 7:2 , 7:1:1 with the mixture of red , blue , orange ... or soil based.Notice:1. Indoor use only .2. Turn off the power before installment, don't touch ... position must be no shock, no fire hidden danger 7. The producst is non waterproof, so put it ...