... and maintenance free5) Efficiency is as high as 1% or more than 98%,power consumpation,save electricity,to save money6 ... ) Anti-interference,leaning ability,so that the output power completely pure7) With overload,shortload,short circuit,lack ... , since wave superimposed compensation to maintain the stability of the output voltage.Advantages TNS AC automatic Voltage stabilizerCPU intelligent control, ...