Line interactive UPS with Full AVR (350VA-1500VA) KEY FEATURES: 1. Short transfer time less than 6 seconds 2. LED display & audible alarmslarmslarms 3. Wide input voltage range: 220/230/240/110 +/-25% 4. Wide input frequency range: 50Hz/60Hz +/- 10% 5. Wave form: Sine wave in mains; Modified sine wave in battery mode 6. Full AVR 7. Cold start available 8. Compatible with generator 9. Surge protection, short-circuit protection, over voltage & low voltage protectionctionction 10. Self-detection on startup 11. Sealed lead-acid maintenance-free battery 12. With optional RS232&USB as well as RJ11 RJ11 RJ11 13. Many front panels and colors for your choice 14. OEM is allowed