A: Thank you for your question. The V44 T5 Viavolt light is ETL / US Intertek certified and comes with two one off power switches allowing for two or four bulb operation. Sincerely, Viagrow
A: It is standard 110.
A: Typically the 6400-6500K is ideal for most plants especially seedling, clones and most herbs. While red spectrums are used in some cases to help certain plants metabolize phosphates for flowering and fruiting production, this practice is most effective using higher wattage lights. For this particular wattage and light the 6400K is best for most plants. Sincerely, Viagrow