baorang khong gay nguy hiem cho ngi va he thong may moc Khi ong BBT Trongcac trng capien cho BBT sau khi thchien cai caclenh “forward” “reverse” va “DC injection stop” Cau hnh mac nh cua nha san xuat Khi ang co nguon reset loi bang tay hay sau khi thc hien lenh dng ...