RELAYS TYPE. MODEL: AVR-500 500W AVR-1000 1000W AVR-1500 1500W AVR-2000 2000W AVR-3000 3000W AVR-5000 5000W VOLTAGE REGULATOR INPUT VOLT:140V-250V AC OUTPUT VOLT: 220V +/-5% WITH 3SEC/3MIN DELAY FUNCTION WITH LOW/OVER CURRENT PROTECTOR; WITH OUTPUT VOLTAGE INDICATION