Reliability Ready at Home Power Tree, American-based company offers an entry-class UPS, S650B. As the name implies, energy capacity reached 650 VA. He uses a battery type sealed lead-acid maintenance-free claims. It also supports UPS AVR function. On the rear panel provided two output voltage 220 V (1.8 A). Port security is also a phone line. Before trying this UPS, you’ll want to read the instructions...