Off-line ups-prb-s series Model no. Prb-s500 prb-s500b prb-s650 prb-s1000 prb-s1200 Capacity 500va 500va 650va 1000va 1200va Watt 300w 300w 400w 600w 720w Input 170~255v 165~270v ac 145~270v ac Frequency 50hz Output 50-90hz 220v 50hz Avr w/o with avr function Transfer
