The cold light string is driven by AC electricity.The home use electricity 110V 60Hz makes less rightness and more inconvenient. So it needs specified driver(transducer).
The brightness depends on the driver. Different length of string uses different driver
Low power consumption. With DC6-7.2V, it uses electricity as well as 0.068-0.088A/M,0.088-0.108A/2M,0.121-0.154A/5M.
