CHUPHOTIC รุ่น Venus Ultimate 3000 (PN:18411) 3000VA/2700W เครื่องสำรองไฟ VNU3000 True Online Double Conversion Pure Sine Wave UPS is also widely used to protect electronic equipments such as computer, server, networks, PABX, CCTV, telecommunications, medical, scientific equipment and industrial, etc. from blackout, browout, surge, spike, harmonic, noise and frequency drift.